// exj1.java  first example simple output integer, string, double
//            note  //  makes rest of line a comment

import java.io.*;

public class exj1  // class name same as file name
{
  public exj1() // constructor same as class name
  {
    int i = 7;     // declare variable i with initial value 7
    char ac = 'a'; // single character
    String msg = "sample string";  // declare msg with string in quotes
    float x = 37.95f; // declare floating point x with initial value
    double y = 127.34e10; // declare double precision with initial value

    System.out.println("exj1.java running"); // simple print title
    System.out.println("i="+i);    // for decimal
    System.out.println("ac="+ac);  // for character
    System.out.println("msg="+msg);// for string
    System.out.println("x="+x);    // for simple floating point
    System.out.println("y="+y);    // for double with exponent
  } // end constructor exj1           optional comment

  public static void main (String[] args) // "main" required
  {
    new exj1(); // construct and execute
  }
} // end class exj1        optional comment