Java Program For Decimal Data Type

Program 1

class TestDecimal
{
    public static void main(String args[])
   {
             float f=12.555f;
           System.out.println(f); 
    /*   
           float a, r=12.34f;
          final float PI=3.14f;
             
            a=PI*r*r;
           System.out.println("\n Area is: "+a); 
   */
   }
}