Java语言程序设计课程实验题目 第二次实验

1. 在IDE中输入以下代码，观察运行结果，并说明该段程序的作用。

import java.util.Scanner;

 

public class DisplayTime {

        

         public static void main(String[] args) {

                   Scanner input = new Scanner(System.in);

                   System.out.println("Enter an integer for seconds: ");

                   int seconds = input.nextInt();

                   int minutes = seconds / 60;

                   int remainingSeconds = seconds % 60;

                   System.out.println(seconds + " seconds is " + minutes +

                                     " minutes and "+ remainingSeconds + " seconds");

         }

}

 

2. 在IDE中输入以下代码，观察运行结果，并说明该段程序的作用。

import javax.swing.JOptionPane;

 

public class ComputeLoanUsingInputDialog {

         public static void main(String[] args){

                   //Enter yearly interest rate

                   String annualInterestRateString = JOptionPane.showInputDialog(

                                    "Enter yearly interest rate,for example 8.25: ");

                  

                   //Covert string to double

                 &