ex2_9.java

Introduction to java programming 一书中所有编程练习部分的源码

import javax.swing.JOptionPane;

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/**
 *
 * @author xiaolei
 */
public class EX2_9 {

    public static void main(String[] args) {
        double s1, s2, s3;
        s1 = Double.parseDouble(JOptionPane.showInputDialog("边1："));
        s2 = Double.parseDouble(JOptionPane.showInputDialog("边2："));
        s3 = Double.parseDouble(JOptionPane.showInputDialog("边3："));
        
        boolean result = (s1+s2)>s3 && (s1+s3)>s2 && (s2+s3)>s1;
        
        System.out.println("Can edges["+s1+","+s2+","+s3+"] form a triangle? " + result);
    }

}