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Aug 12, 2024 · 2. User-defined Method . The method written by the user or programmer is known as a user-defined method. These methods are modified according to the requirement. Ways to Create Method in Java . There are two ways to create a method in Java: 1. Instance Method: Access the instance data using the object name. Declared inside a class. Syntax:
A method must be declared within a class. It is defined with the name of the method, followed by parentheses (). Java provides some pre-defined methods, such as System.out.println(), but you can also create your own methods to perform certain actions:
- Java Methods. class Main { // create a method public int addNumbers(int a, int b) { int sum = a + b; // return value return sum; } public static void main(String[] args) { int num1 = 25; int num2 = 15; // create an object of Main Main obj = new Main(); // calling method int result = obj.addNumbers(num1, num2); System.out.println("Sum is: " + result); } }
- Method Return Type. class Main { // create a method public static int square(int num) { // return statement return num * num; } public static void main(String[] args) { int result; // call the method // store returned value to result result = square(10); System.out.println("Squared value of 10 is: " + result); } }
- Method Parameters. class Main { // method with no parameter public void display1() { System.out.println("Method without parameter"); } // method with single parameter public void display2(int a) { System.out.println("Method with a single parameter: " + a); } public static void main(String[] args) { // create an object of Main Main obj = new Main(); // calling method with no parameter obj.display1(); // calling method with the single parameter obj.display2(24); } }
- Java Standard Library Method. public class Main { public static void main(String[] args) { // using the sqrt() method System.out.print("Square root of 4 is: " + Math.sqrt(4)); } }
Feb 29, 2024 · Types of Methods. In Java, methods can be categorized in two main ways: 1. Predefined vs. User-defined: Predefined methods: These methods are already defined in the Java Class Library and can be used directly without any declaration. Examples include System.out.println() for printing to the console and Math.max() for finding the maximum of two ...
Method in Java. In general, a method is a way to perform some task. Similarly, the method in Java is a collection of instructions that performs a specific task. It provides the reusability of code.
Jan 29, 2024 · What are Methods in Java. A method in Java is a way of organizing or structuring code with a name so that we can easily understand the task or action the code performs. While a method can be known as a function, in Java, it is generally referred to as a method. For example, imagine having hundreds of books without names, just with blank covers.
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Jul 16, 2024 · User-defined Methods. Custom methods defined by the user are known as user-defined methods. It is possible to modify and tweak these methods according to the situation. Here’s an example of a user-defined method. Methods in Java can also be classified into the following types: Static Method; Instance Method; Abstract Method; Factory Method
