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Sep 17, 2024 · The Component class is the superclass of all components. A component class can be linked with a page, components of web applications. Component clearly shows that is the graphical representation of an Object. Important methods of Component Class:
Feb 29, 2024 · Methods are essential for organizing Java projects, encouraging code reuse, and improving overall code structure. In this article, we will look at Java methods, including their syntax, types, and recommended practices.
A method is a block of code which only runs when it is called. You can pass data, known as parameters, into a method. Methods are used to perform certain actions, and they are also known as functions. Why use methods? To reuse code: define the code once, and use it many times.
- 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)); } }
- Java Program to Print an Integer (Entered by the User)
- Java Program to Add Two Integers.
- Java Program to Multiply two Floating Point Numbers.
- Java Program to Find ASCII Value of a character.
This is a free set of tasks for your Java practice by CodeGym. If you’re a beginner, you can start learning the basics and get immediate feedback on your progress. If you’re a seasoned learner, it will help you estimate your current level of knowledge with additional Java challenges.
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Java Class and Objects (With Example) Java is an object-oriented programming language. The core concept of the object-oriented approach is to break complex problems into smaller objects. An object is any entity that has a state and behavior. For example, a bicycle is an object. It has. States: idle, first gear, etc.
