# Import Math Java

PI and others are modified with classifiers public. gz; Algorithm Hash digest; SHA256: 31d742ef021b0036a287a817abbe7e2a4691bfd249fbe14b5d789a1387d24baa: Copy MD5. lang is the "default package" and everything in it is already implicitly imported for you. 141592653589793. In the above example, we have imported the java. docx - import java. 6; double d2 = 0. Random; import sun. The following program code is an example that implements some of the methods of the Math class in Java: import java. round () will include (double*100. Python maths module is a standard module and is always available in python to do mathematical operations easily. double g45 = Math. The Math class method sqrt() in the package java. Following is the code : Model class : import java. Defining a method m1 which prints a line. Yet another way to get these values is using recursion. Uploaded at 2021-10-20 04:06. nextAfter() method. displaying the variable a to verify that our operations are done or not. addExact give us more control over arithmetic. To Import math in python is to give access to the mathematical functions, which are defined by the C standard. java能处理大数的类有两个高精度大整数BigInteger 和高精度浮点数BigDecimal，这两个类位于java. Results must be semi-monotonic. Is there a PI in Java? Pi in Java. import java. hackermaker. Method notes. *;" statement will import all static members of the Math class. The Math class method sqrt () in the package java. *; Once a static member is imported that can be used without using class name or. public static double random() Package to Import. Date; import javax. PI and others are modified with classifiers public. Following methods show how to use recursion to find maximum and minimum values of an array. Trigonometric Math Methods. I'm trying to import java. To refer to a class without specifying the entire package name, use the import function in your code. Use import to access built-in and user-defined packages into your java source file so that your class can refer to a class that is in another package by directly using its name. An example would be that of a squaring of 0. abs(-20); // 20. Unlike many other global objects, Math is not a constructor. docx - import java. The static variables or methods of the Math class can be accessed in two ways. Trigonometric Math Methods. An import is a good or service bought in one country that was. If you want to specific range of values, you have to multiply the returned value with the magnitude of the range. Defining the main method. [C:\java_code\]java MathXmpl 3. But all of its methods and variables are static. Static Import Math class in Java. public static double random() Package to Import. Scanner; @@ra1. Java has very powerful math functions, including pi. lang package and it has two constants and more than 40 static methods to do some advanced mathematical operations easily. Is there a PI in Java? Pi in Java. In Java, there is a concept of static import Let's discuss it with the Math class. If you need the natural log of 2 or 10, use the constants Math. max;" statement. abs(-20); // 20. Java Math Library. pow (num, exp);. lang, you don't need to do anything special. There are different ways of importing packages :-1> Importing all the classes within a package. *;" statement will import all static members of the Math class. Angular Math Methods. You will need to import java. lang is the "default package" and everything in it is already implicitly imported for you. Defining the main method. Hopefully, you noticed that the method list lacks any general root function. Dear Twitpic Community - thank you for all the wonderful photos you have taken over the years. JFrame; import javax. This class has a public static field called out which is an instance of the java. Java8Examples3. Unlike many other global objects, Math is not a constructor. random function. in most of the case, the. If anyone could help or if you need more information from me let me know and i'll try and find out. Is there a PI in Java? Pi in Java. sqrt; public class Demo { public static void main (String [] arg) { double num = 36. We have now placed Twitpic in an archived state. int a = Math. Math Operators in Java. The following program code is an example that implements some of the methods of the Math class in Java: import java. What Math should I import to Java? Static import means that the fields and methods in a class can be used in the code without specifying their class if they are defined as public static. */ package java. hackermaker. The Math class method sqrt() in the package java. The first parameter divided by the second parameter will have a remainder, possibly zero. We would like to see some examples. There are different ways of importing packages :-1> Importing all the classes within a package. Java uses file system directories to store packages. Trong phần này mình sẽ thực hiện hai ví dụ sử dụng phương thức sqrt () để minh họa cho cách dùng của nó. If anyone could help or if you need more information from me let me know and i'll try and find out. These Java math functions allows us to perform basic mathematical operations like square root, cube root, logarithmic, and trigonometric functions. Working - Square of a number can be found out in Java by a variety of techniques. lang package. *; Once a static member is imported that can be used without using class name or. What Math should I import to Java? Static import means that the fields and methods in a class can be used in the code without specifying their class if they are defined as public static. Cách dùng hàm pow () trong thư viện Math Java. java file for any class you define to be part of mypack package must be stored in a directory called mypack. Compile Java File: RandomExample1, Free Online java compiler, Javatpoint provides tutorials and interview questions of all technology like java tutorial, android, java frameworks, javascript, ajax, core java, sql, python, php, c language etc. 141592653589793 2. log(16, 4)) print (math. double answer = Math. stack the two arrays you created like this. java8; import java. invokepackage contains dynamic language support provided directly by the Java core class libraries and virtual machine. A program that demonstrates this is given as follows:. regex public class Solution static int. docx - import java. Review the following examples : 1. how to import math in java is available in our book collection an online access to it is set as public so you can download it instantly. max() are,. Math Operators in Java. All its methods are static. Method notes. These applets are designed to accompany the four booklets in the series A Toolkit of Dynamics Activities, published by Key Curriculum Press. SAVE OFFLINE. map () lets you convert an object to something else. The Java Math class provides more advanced mathematical calculations than what the basic Java math operators provide. java from CSC 201 at Northern Virginia Community College. How to import math class in Java? The Math class in Java is available in java. How do you import a class in Java? To import java package into a class, we need to use java import keyword which is used to access package and its classes into the java program. * ; Here java. random function. BigDecimal;或者. There are two ways to do this: 1) With user interaction: Program will prompt user to enter the radius of the circle. Static import means that the fields and methods in a class can be used in the code without specifying their class if they are defined as public static. It takes one double value as its argument and returns the hyperbolic Tangent value of a Given double value. util import java. Java Math abs() method returns the absolute value of the argument. System class. Then it waits for you to enter a number. For programming purposes, this. ) on the second line. BigDecimal;或者. We access some constants like Math. lang package, the Math class does not need to be imported. [ERROR] Hint: Check the inheritance chain from your. Các hàm toàn học đều nằm trong thư viện Math => Để sử dụng chúng ta phải gọi qua thư viện Math. *; Once a static member is imported that can be used without using class name or. 2 Group by the name + Count or Sum the Qty. To import java package into a class, we need to use java import keyword which is used to access package and its classes into the java program. Math is everywhere in programming. Happy learning!. How to import math class in Java? The Math class in Java is available in java. Hyperbolic Math Methods. The Java Math class provides more advanced mathematical calculations than what the basic Java math operators provide. The operations supported by this math library include absolute value calculation, trigonometric value calculation, round value, exponent calculation etc. 141592653589793. We, however, can calculate it using the functions the math module provides. sin(a) Here, we have directly used the class name to call the method. BigDecimal; public class Item { private String name; private int qty; private BigDecimal price; //constructors, getter/setters } 2. out, you are referring to that static variable out of the System class. FloatConsts; import sun. lang is a package definition and the asterisk character is used here to indicate the compiler to import all the predefined classes from that package. This class has a public static field called out which is an instance of the java. [C:\java_code\]java MathXmpl 3. import java. 5 make the element as 1. // To import the whole package. max() are,. Since in this article, we will learn rounding of a double to 2 decimal places, the application of Math. Scanner; @@ra1. {PYTHON} import math print (math. The pow function is available in the math module and can be invoked from the program. lang package, the Math class does not need to be imported. lang package. In Java, there is a concept of static import Let's discuss it with the Math class. math import java. *; Example java program to generate a random number using math. However, in programs extensively utilizing these functions, a static import can be used. random() is used to return a pseudorandom double type number greater than or equal to 0. Let us follow the below example. We would like to see some examples. 141592653589793 2. Java Math Library. util import java. The import statement will link the math module to the program. The operations supported by this math library include absolute value calculation, trigonometric value calculation, round value, exponent calculation etc. Is there a PI in Java? Pi in Java. min when user inputs random numbers. The Math class contains methods for finding the maximum or minimum of two values, rounding values, logarithmic functions, square root, and trigonometric functions (sin, cos, tan etc. *; Example java program to generate a random number using math. io import java. Math Operators in Java. then the operation name. 2> Importing specific class from a package. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. When you type a number (such as 5) and press the Enter key, it displays the confirmation message ( You entered 5. Thus you do not need to import java. But if we want to import only the PI variable of the Math class, not other static methods and variables of the Math class then we can use the "import static java. double answer = Math. Since java. out; import static java. Write a Java program to calculate and print average (or mean) of the stream of given numbers. There are two ways to access static variables or methods of Math class,. It's not a function object. The first parameter divided by the second parameter will have a remainder, possibly zero. Moreover, all public classes of java. Now, let us look into them in detail. If the argument is positive infinity, then the result is positive infinity. BigInteger;和import java. In Java, there is a concept of static import Let's discuss it with the Math class. 71828 approximately. We recommend you use a mirror to download our release builds, but you must verify the integrity of the downloaded files using signatures downloaded from our main distribution directories. Google Play. The operations supported by this math library include absolute value calculation, trigonometric value calculation, round value, exponent calculation etc. Step 2: Now you have to write the code, first, write the following line at the top of the class to import the header file. import PackageName. List Objects. Results must be semi-monotonic. System is a class in java. Method notes. Trước khi gọi các hàm Math, bạn có thể import package để khỏi phải viết đầy đủ tên pack, như. The “math” module is missing from the above program. *; Once a static member is imported that can be used without using class name or. log10(1000)) print (math. Rather than reading a good book with a cup of tea in the afternoon, instead they juggled with some infectious virus inside their desktop computer. docx - import java. displaying the variable a to verify that our operations are done or not. The Java Math Library provides various Functions and Constants / Properties. Calling method m1. int i1 = 27; int i2 = -45; Double(decimal) variables. Java 8 Streams map () examples. The class Math contains methods for performing basic numeric operations such as the elementary exponential, logarithm, square root, and trigonometric functions. The value of constant e = 2. 1,079 Pages • 379,501 Words • PDF • 6. lang is known as java. pow (num, exp);. If the value of x is negative, the return value is always NaN. Rather than reading a good book with a cup of tea in the afternoon, instead they juggled with some infectious virus inside their desktop computer. It is a good practice to import the package. import math in java, but end up in malicious downloads. It takes one double value as its argument and returns the hyperbolic Tangent value of a Given double value. Math is everywhere in programming. Dear Twitpic Community - thank you for all the wonderful photos you have taken over the years. Example for Math. Download Apache Commons Math Using a Mirror. text import java. There is not necessary to import any package for the Math class because this is already in java. The arguments are taken in int, float, double and long. import static java. Random() Syntax. Math; public class MathDemo { public static void main ( String [] args) { double a1= 4 ; double a2= 100 ; double a3. java能处理大数的类有两个高精度大整数BigInteger 和高精度浮点数BigDecimal，这两个类位于java. Hyperbolic Math Methods. println() method we've been using since the first day of class. PREVIEW PDF. I hope this article helped you. *; ” statement will import all static variables and methods of the Math class. Java has very powerful math functions, including pi. This math class is included in java. Creating an object of class c1. Return that value. import static java. Result is positive zero, if the argument is positive zero or negative zero. *; Example java program to generate a random number using math. import math p = math. And some methods like Math. Hopefully, you noticed that the method list lacks any general root function. Recent releases (48 hours) may not yet be available from all the mirrors. It is mostly used in geometry to calculate area, circumference, volume, etc. Java Math Library. random() is used to return a pseudorandom double type number greater than or equal to 0. random function. How to get random number between 0 to 1 in java? Example for Math. Ví dụ 1: Ở ví dụ này mình sẽ khai báo và khởi tạo sẵn giá trị cho biến num1 và num2, sau đó tính num1 num2. The Math class contains methods for finding the maximum or minimum of two values, rounding values, logarithmic functions, square root, and trigonometric functions (sin, cos, tan etc. io import java. lang is the "default package" and everything in it is already implicitly imported for you. Random() Syntax. With the help of static import, we can access the static members of a class directly without class name or any object. We know that roots work like this: the 3rd root of 8 = 8. exp() method exists in. util is known as java. java from CSC 201 at Northern Virginia Community College. Is there a PI in Java? Pi in Java. Note: There is no need to explicitly import java. import java. The first parameter divided by the second parameter will have a remainder, possibly zero. But if we want to import only the max() method of the Math class, not another static method and variables of Math class then we can use the "import static java. log(), rather than as a method of a Math object you created (Math is not a constructor). 2) Without user interaction: The radius value would be specified in the program itself. PI;" statement. util import java. If you are using any item from the package java. docx - import java. Trigonometric Math Methods. module; it may not be inheriting a required module or a module may not. random function. then the operation name. signum() method. log2(32)) The output: Console application 2. In this tutorial we will see how to calculate area and circumference of circle in Java. regex public class Solution static int. For Example: we always use sqrt () method of Math class by using Math class i. 1 MB + Java + thinking. The Math class is a member of the java. For more information, click here. abs() trả về giá trị tuyệt đối của tham số. import static java. To refer to a class without specifying the entire package name, use the import function in your code. Python maths module is a standard module and is always available in python to do mathematical operations easily. random() is used to return a pseudorandom double type number greater than or equal to 0. The static variables or methods of the Math class can be accessed in two ways. We know that roots work like this: the 3rd root of 8 = 8. *; to use them without fully qualified names. The "import static java. The "Static Import" Construct. signum() method. 6; double d2 = 0. regex public class Solution static int. Recent releases (48 hours) may not yet be available from all the mirrors. Following is the code : Model class : import java. Write the name of the class and then click on the ‘Next’ button. Write a Java program to calculate and print average (or mean) of the stream of given numbers. This relaxation permits. lang package, and not in the java. just like the second column shown above. Consider the System. log(16, 4)) print (math. math import java. Static import means that the fields and methods in a class can be used in the code without specifying their class if they are defined as public static. Google Play. To import java package into a class, we need to use java import keyword which is used to access package and its classes into the java program. *; Example java program to generate a random number using math. It takes one double value as its argument and returns the hyperbolic Tangent value of a Given double value. docx - import java. Trước khi gọi các hàm Math, bạn có thể import package để khỏi phải viết đầy đủ tên pack, như. Return that value. sqrt (), but by using static import we can access sqrt () method directly. *; 2) Note comments given in the above code. All its methods are static. The Math class method sqrt() in the package java. : Java > Open Source Codes > net > sf > saxon > exslt > Math. lang package that has a static variable named out. 6; double d2 = 0. 45; Java Math abs() method with Example. regex public class Solution static int. The first parameter divided by the second parameter will have a remainder, possibly zero. import java. The Math class method sqrt () in the package java. Power function in Java is of type java. You can use a static import declaration to import the out static variable from the System class as follows: import static java. Ví dụ 1: Ở ví dụ này mình sẽ khai báo và khởi tạo sẵn giá trị cho biến num1 và num2, sau đó tính num1 num2. abs() trả về giá trị tuyệt đối của tham số. Static import means that the fields and methods in a class can be used in the code without specifying their class if they are defined as public static. math包内，要使用它们必须在类前面引用该包：import java. Methods of lang. JAVA Applets. lang is a package definition and the asterisk character is used here to indicate the compiler to import all the predefined classes from that package. int a = Math. An import is a good or service bought in one country that was. Is there a PI in Java? Pi in Java. hackermaker. Additional points about package: Package statement must be first statement in the program even before the import statement. docx - import java. The default random number always generated between 0 and 1. PrintStream class. In Java, the Math class belongs to java. max;" statement. text import java. The static variables or methods of the Math class can be accessed in two ways. Math package. sqrt (), but by using static import we can access sqrt () method directly. PI directly on the Math type. It takes one double value as its argument and returns the hyperbolic Tangent value of a Given double value. Java: Hàm toán học (Math) Đăng ký nhận thông báo về những video mới nhất. Review the following examples : 1. In Java we use the Math class for high-quality mathematical methods. pi / 2) print (angle) Since you just wrote the code and are familiar with it, you might actually find the first version easier to read. import java. In Java, static import concept is introduced in 1. Create a numpy array by reading the 1st column from data. Source code available here: http://ideone. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. The Math class is a member of the java. abs(10); // 10 int b = Math. Ví dụ 1: Ở ví dụ này mình sẽ khai báo và khởi tạo sẵn giá trị cho biến num1 và num2, sau đó tính num1 num2. Step 2: Now you have to write the code, first, write the following line at the top of the class to import the header file. These applets are designed to accompany the four booklets in the series A Toolkit of Dynamics Activities, published by Key Curriculum Press. The Math class method sqrt() in the package java. PI;" statement. * to use Arrays class. Language English Bahasa Indonesia Español - América Latina Português - Brasil 中文 - 简体 日本語 한국어. Java Math Library. The import statement will link the math module to the program. 1 MB + Java + thinking. public final class Math extends Object. In Java, the Math class belongs to java. There are different ways of importing packages :-1> Importing all the classes within a package. 718281828459045 Since Math is in the java. PI is a built-in mathematical function that is part of Math class. How to round-off decimal number to nearest integer in java? Example for Math. What Math should I import to Java? Static import means that the fields and methods in a class can be used in the code without specifying their class if they are defined as public static. 1 package net. lang package. Use import to access built-in and user-defined packages into your java source file so that your class can refer to a class that is in another package by directly using its name. random() method. How to get square root of a number in. import PackageName. docx - import java. Example for Math. When we square 0. lang is known as java. abs(-20); // 20. displaying the variable a to verify that our operations are done or not. In order to use the Java Math library, we must first import it into our code. In this article, we are going to see the various methods of how we can square a number using the Java programming language. max and Math. In order to generate multiple random numbers each time, we can use for loop. max() are,. abs () method returns the absolute value of any type of argument passed. The default random number always generated between 0 and 1. public class ScannerApp. She has 20+ years of experience covering personal finance, wealth management, and business news. ClassName; // To import a certain class only import package. The import list scope is defined as follows: Functions, including nested and local functions — The scope is the entirety of the function. [C:\java_code\]java MathXmpl 3. 6; double d2 = 0. A program that demonstrates this is given as follows:. PI hằng số PI. *; Example java program to generate a random number using math. With the help of static import, we can access the static members of a class directly without class name or any object. Then it waits for you to enter a number. math class : 1. Java Math Library. here we assigning a variable a to store the values of our operations in it. Trong phần này mình sẽ thực hiện hai ví dụ sử dụng phương thức sqrt () để minh họa cho cách dùng của nó. max() are,. println() method we've been using since the first day of class. Trong phần này mình sẽ thực hiện hai ví dụ sử dụng phương thức pow () để minh họa cho cách dùng của nó. double d1 = 84. Static Import Math class in Java. BigDecimal; import java. *;" in the page directive) and i'm getting the following errors:. module; it may not be inheriting a required module or a module may not. Math | Android Developers. lang are automatically and implicitly imported, so you don't have to import anything to use the Math class. LN2 or Math. Java has very powerful math functions, including pi. The Java Math class includes a number of features used to perform mathematical functions on numbers. import static java. Java API By Example, From Geeks To Geeks. How to import math class in Java? The Math class in Java is available in java. regex public class Solution static int. Trước khi gọi các hàm Math, bạn có thể import package để khỏi phải viết đầy đủ tên pack, như. module; it may not be inheriting a required module or a module may not. The Math is located in the java. Documentation. The import code looks like this: import java. It's not a function object. List Objects. Java Math class provides several methods to work on math calculations like min(), max(), avg(), sin(), cos(), tan(), round(), ceil(), floor(), abs() etc. Since java. JFrame; import javax. 2> Importing specific class from a package. The Math class is used to operate the calculations. Write the name of the class and then click on the ‘Next’ button. For more information, click here. You will need to import java. There are some functions have been used in the given example. System is really the java. hackermaker. PI Constant in Java Math Class. Examples to ‘group by’ a list of user defined Objects. out; import static java. lang package that has a static variable named out. Create a numpy array by reading the 1st column from data. It doesn't work with BigInt. ) on the second line. pow (num, exp);. this type unavailable. *; " statement will import all static variables and methods of the Math class. max( x , y ) method can be used to find the highest value of x and y :. Troy Segal is an editor and writer. Graphics; import java. Math works with the Number type. The following program code is an example that implements some of the methods of the Math class in Java: import java. double g45 = Math. Java has very powerful math functions, including pi. Create another numpy array with elements which depends on your previously created numpy array ie if the element is greater than 5. Unlike other global objects, Properties and Functions inside the Java math class are static. docx - import java. *;" in the page directive) and i'm getting the following errors:. The import list scope is defined as follows: Functions, including nested and local functions — The scope is the entirety of the function. Math works with the Number type. Google Play. Hyperbolic Math Methods. JFrame; import javax. This math class is included in java. PI Constant in Java Math Class. Random() Syntax. int a = Math. 0 and less than 1. text import java. com/courses/learn-java-fastIf you're new to programming, I HIGHLY RECOMMEND solving challenges on Edabit: https. math import java. Is there a PI in Java? Pi in Java. import static java. There is a single operator in Java, capable of providing the remainder of a division operation. java from CSC 201 at Northern Virginia Community College. round () method is used in Java to round a given number to its nearest integer. But if we want to import only the max() method of the Math class, not another static method and variables of Math class then we can use the "import static java. Java uses file system directories to store packages. System class. The Java Math class includes a number of features used to perform mathematical functions on numbers. This method can handle all the data types. An import is a good or service bought in one country that was. public class ScannerApp. stack the two arrays you created like this. The "import static java. 0 and less than 1. If anyone could help or if you need more information from me let me know and i'll try and find out. But if we want to import only the PI variable of the Math class, not other static methods and variables of the Math class then we can use the "import static java. PI is a built-in mathematical function that is part of Math class. Still, this is easy for you to manage similar mathematical operations in Java by importing one static mathematics class i. util import java. math to a jsp page (using import = "java. Here, To put a class into a package, at the first line of code define package p1. Defining the main method. Following methods show how to use recursion to find maximum and minimum values of an array. Special cases −. In Java, there is a concept of static import Let's discuss it with the Math class. hackermaker. 6; double d2 = 0. Results must be semi-monotonic. import math angle = math. com/courses/learn-java-fastIf you're new to programming, I HIGHLY RECOMMEND solving challenges on Edabit: https. nextAfter() method. She has 20+ years of experience covering personal finance, wealth management, and business news. max() are,. For programming purposes, this. A program that demonstrates this is given as follows:. If you need the natural log of 2 or 10, use the constants Math. How do you import a class in Java? To import java package into a class, we need to use java import keyword which is used to access package and its classes into the java program. The Math class method sqrt () in the package java. max;" statement. exp() method is used to find the Euler's number e raised to the power of a double value in Java for the given input (x - parameter). What Math should I import to Java? Static import means that the fields and methods in a class can be used in the code without specifying their class if they are defined as public static. If the argument is positive infinity, then the result is positive infinity. 718281828459045 Since Math is in the java. I'm trying to import java. It's not a function object. If you became a programmer to escape math, we have bad news for you. The first parameter divided by the second parameter will have a remainder, possibly zero. Since java. Trong phần này mình sẽ thực hiện hai ví dụ sử dụng phương thức sqrt () để minh họa cho cách dùng của nó. int i1 = 27; int i2 = -45; Double(decimal) variables. System is really the java. You will need to import java. In Java, the Math class belongs to java. {PYTHON} import math print (math. Trong phần này mình sẽ thực hiện hai ví dụ sử dụng phương thức pow () để minh họa cho cách dùng của nó. These Java math functions allows us to perform basic mathematical operations like square root, cube root, logarithmic, and trigonometric functions. Moreover, all public classes of java. In Java, static import concept is introduced in 1. JAVA Applets. here we assigning a variable a to store the values of our operations in it. PI Constant in Java. io import java. 0 and less than 1. JFrame; import javax. Static import means that the fields and methods in a class can be used in the code without specifying their class if they are defined as public static. Math; Write the following code anywhere you want to find the exponent. 2 Group by the name + Count or Sum the Qty. util import java. Java Math Library. lang is known as java. However, in programs extensively utilizing these functions, a static import can be used. We know that roots work like this: the 3rd root of 8 = 8. To refer to a class without specifying the entire package name, use the import function in your code. Since java. log2(32)) The output: Console application 2. lang package, not java. It computes simple things like absolute values, to complex ones like cube roots. How to round-off decimal number to nearest integer in java? Example for Math. 45; Java Math abs() method with Example. I hope this article helped you. Java has an import statement that allows you to import an entire package (as in earlier examples), or use only certain classes and interfaces defined in the package. Result is positive zero, if the argument is positive zero or negative zero. Static import means that the fields and methods in a class can be used in the code without specifying their class if they are defined as public static. The default random number always generated between 0 and 1. Java Math Exercises: Exercise-17 with Solution. *; ” statement will import all static variables and methods of the Math class. When to use static imports? If you are going to use static variables and methods a lot then it’s fine to use static imports. abs() trả về giá trị tuyệt đối của tham số.