Java OOPS Syntax

import Statements;
..
..

class ClassName1
{
    ....
    ....
}
class ClassName2
{
    ....
    ....
}
class ClassName3
{
    ....
    ....
}

class ClassName4
{
    ....
    ...
}

...
...

class Main
{
    public static void main(String args[])
    {
    ClassName1 c1=new ClassName1();
    ..
    ..
    ..
    c1.method()
    ..
    ..  
    }
}

Key Points

Java OOPS Syntax

1 Class 4 Methods Using OOPS Syntax

Program
Online Compiler

OOPS Program

class Arithmetic
{
	int x=10,y=20,z;
	
	void add()
	{
		z=x+y;
		System.out.println(z);
	}


	void sub()
	{
		z=x-y;
	System.out.println(z);
		
	}


	void mul()
	{
		z=x*y;
		System.out.println(z);
	}
	
	void div()
	{
		z=x/y;
		System.out.println(z);
	}
}

public class oops2 {

	public static void main(String[] args) {
		Arithmetic a=new Arithmetic();
		a.add();
		a.sub();
		a.mul();
		a.div();

	}

}

Output:

4 Classs each class 1 Method Using OOPS Syntax

Program
Online Compiler

class Addition
{
	int x=10,y=20,z;
	
	void add()
	{
		z=x+y;
		System.out.println(z);
	}
}

class Substraction
{
	int x=100,y=20,z;

	void sub()
	{
		z=x-y;
	System.out.println(z);
		
	}
}
	
class Multiplication
	{
		int x=10,y=20,z;

	void mul()
	{
		z=x*y;
		System.out.println(z);
	}
	}
	
class Division
	{
		int x=10,y=20,z;

	void div()
	{
		z=x/y;
		System.out.println(z);
	}
}

public class oops1 {

	public static void main(String[] args) {
		
		Addition a=new Addition();
		Substraction s=new Substraction();
		Multiplication m=new Multiplication();
		Division d=new Division();
		a.add();
		s.sub();
		m.mul();
		d.div();

	}

}