ex2_1.java

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

/**
 *
 * @author xiaolei
 */
import javax.swing.JOptionPane;

public class EX2_1 {

    public static void main(String[] args) {
        String input;
        double c;  //摄氏度
        double f;  //华氏度
        
        input = JOptionPane.showInputDialog(null,
                "输入一个华氏温度：",
                "EX2_1",
                JOptionPane.QUESTION_MESSAGE);
        
        f = Double.parseDouble(input);
        
        c = 5.0 * (f - 32) / 9;
        
        JOptionPane.showMessageDialog(null, "华氏" + f + "F => 摄氏" + c + "C" );
    }
}