Program for addition of two numbers.

03 Java Operators.
Program for addition of two numbers:

//AdditionOperatorDemo.java 

class AdditionOperatorDemo
     {
  public static void main(String[] args)
{
int a = 10;
int b = 20;

System.out.println(a + b);
System.out.println("a" + "b");
System.out.println("a + b" + a + b);
System.out.println("a + b" + 10 + b);
System.out.println("a + b" + 10 + 20);
System.out.println("a + b" + "10" + 20);
System.out.println("a + b10" + 20);
System.out.println("a + b10" + "20");
System.out.println("a + b1020");

System.out.println("a + b" + (a + b));
System.out.println("a + b" + (10 + 20));
System.out.println("a + b" + 30);
System.out.println("a + b" + "30");
System.out.println("a + b30");

//System.out.println("a - b" + a - b);
//CE: operator - cannot be applied to String, int
System.out.println("a - b" + (a - b));
//a-b-10
System.out.println("a * b" + a * b);

//more testing bits
System.out.println(10 + 20);
System.out.println(10 + 20 + "");
System.out.println(10 + "" + 20 );
System.out.println("" +10 + 20 );
System.out.println("" +(10 + 20) );
}
  }

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