INTRODUCTION TO OBJECTS AND INPUT/OUTPUT - Java Programming: From Problem Analysis to Program Design - page 147

{

double x = 15.674;
double y = 235.73;
double z = 9525.9864;
int num = 83;
String str;

System.out.println("123456789012345678901234567890");
System.out.println(String.format("%.2f", x));
System.out.println(String.format("%.3f", y));
System.out.println(String.format("%.2f", z));

3

System.out.println(String.format("%7s", "Hello"));
System.out.println(String.format("%5d%7.2f", num, x));
System.out.println(String.format("The value of "
+ "num = %5d", num));

str = String.format("%.2f", z);

System.out.println(str);

}

}

Sample Run:
123456789012345678901234567890
15.67
235.730
9525.99
Hello
83 15.67
The value of num ¼ 83

9525.99

The preceding sample run is self-explanatory. The details are left as an exercise for you.

The following example illustrates how the String method format can be used to format
the output in an output dialog box.

EXAMPLE 3-15

import javax.swing.JOptionPane;

public class Example3_15
{

public static void main(String[] args)
{

double x = 15.674;
double y = 235.73;
double z = 9525.9864;
String str;