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1.编写一个程序,用户输入两个数,求出其加减乘除,并用消息框显示计算结果。
import javax.swing.JOptionPane;
public class Da
{
public static void main(String[] args)
{
int n1=Integer.parseInt(JOptionPane.showInputDialog("Input number 1: "));
int n2=Integer.parseInt(JOptionPane.showInputDialog("Input number 2: ")) ; //获取从JOptionPane.showInputDialog对话框中输入的值,然后转换为int类型
JOptionPane.showMessageDialog(null,"The sum is:"+(n1+n2) +"\n"+"The difference is:"+(n1-n2) +"\n"+"The product is:"+(n1*n2) +"\n"+"The division is:"+(n1/n2));
}
2.随机验证码。
public class Work
{
public static void main(String[] args)
{
Scanner scanner = new Scanner(System.in);
String str = null;
while((str=scanner.nextLine())!=null)
{
if(str.equals("exit"))
{ break;}
System.out.println(str);
}
}
}
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原文地址:http://www.cnblogs.com/liang123222/p/4858649.html