instance in java code example

Example 1: instance variable java

A variable declared inside the class is called instance variable. Value of 
instance variable are instance specific.
public class InstanceVariableDemo
{
   // instance variable declared inside the class and outside the method
   int c;
   public void subtract()
   {
      int x = 100;
      int y = 50;
      c = x - y;
      System.out.println("Subtraction: " + c);
   }
   public void multiply()
   {
      int m = 10;
      int n = 5;
      c = m * n;
      System.out.println("Multiplication: " + c);
   }
   public static void main(String[] args)
   {
      InstanceVariableDemo obj = new InstanceVariableDemo();
      obj.subtract();
      obj.multiply();
   }
}

Example 2: instanceof java

class Example{  
  
 public static void main(String args[]){  
   
 Example anexample=new Example();  
 System.out.println(anexample instanceof Example);
   
 }  
  
}

Example 3: what is an instance in java

Instance variables in Java are non-static variables which are defined in a class outside any method, constructor or a block. Each instantiated object of the class has a separate copy or instance of that variable. An instance variable belongs to a class.