Program 4.2: Addition and Subtraction of Doubles

class AddDoubles {

  public static void main (String args[]) {

    double x = 7.5;
    double y = 5.4; 
    double z;


    System.out.println("x is " + x);
    System.out.println("y is " + y);
  
    z = x + y;
    System.out.println("x + y is " + z);
    
    z = x - y;
    System.out.println("x - y is " + z);

  }

 }

% javac AddDoubles.java
% java AddDoubles
x is 7.5
y is 5.4
x + y is 12.9
x - y is 2.1
%