?? comparison.java
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// Fig. 2.20: Comparison.java
// Compare integers using if statments, relational operators and equality // operators
// Java packages
import javax.swing.JOptionPane;
public class Comparison{
// main method begins execution of Java application
public static void main( String args[] )
{
String firstNumber; // first string entered by user
String secondNumber; // second string entered by user
String result; // a string containing the output
int number1; // first number to compare
int number2; // second number to compare
// read first number from user as a string
firstNumber = JOptionPane.showInputDialog( "Enter first integer:" );
// read second number from user as a string
secondNumber = JOptionPane.showInputDialog( "Enter second integer:" );
// convert numbers from type Sting to type int
number1 = Integer.parseInt( firstNumber );
number2 = Integer.parseInt( secondNumber );
//initialize result to empty String
result = "";
if ( number1 == number2 )
result = result + number1 + " == " + number2;
if ( number1 != number2 )
result = result + number1 + " != " + number2;
if ( number1 < number2 )
result = result + "\n" + number1 + " < " + number2;
if ( number1 > number2 )
result = result + "\n" + number1 + " > " + number2;
if ( number1 <= number2 )
result = result + "\n" + number1 + " <= " + number2;
if ( number1 >= number2 )
result = result + "\n" + number1 + " >= " + number2;
// display result
JOptionPane.showMessageDialog( null, result, "Comparison Results",
JOptionPane.INFORMATION_MESSAGE );
System.exit( 0 ); // terminate application
} // end method main
} // end class Comparison
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