编写程序实现如下界面效果：

import java.util.Scanner;
 
public class Test01 {
 
	public static void main(String[] args) {
		String name;
		
		Scanner input = new Scanner(System.in);
		System.out.println("请输入您的姓名：");
		name = input.nextLine();
		
		System.out.println(name+"，您好！欢迎学习Java。");
 
	}
 
}

编写字符界面版计算器程序，运行时提示输入两个操作数，然后输出加减乘除运行结果。

import java.util.Scanner;
public class Test02 {
 
	public static void main(String[] args) {
		double number1,number2;
		
		System.out.println("=======字符版计算器=======");
		Scanner input = new Scanner(System.in);
		System.out.print("请输入第一个操作数：x=");
		number1 = input.nextDouble();
		System.out.print("请输入第二个操作数：y=");
		number2 = input.nextDouble();
		
		System.out.println("运算结果如下：");
		System.out.println("x+y="+(number1+number2));
		System.out.println("x-y="+(number1-number2));
		System.out.println("x*y="+(number1*number2));
		if(number2 != 0){
			System.out.println("x/y="+(number1/number2));
		}
		else {
			System.out.println("除数为0，运算无意义。");
		}
		
	}
 
}

 

修改第（2）题程序，使得程序输出的运算结果中，能直接显示所输入的数据，而不是x+y之类。

import java.util.Scanner;
public class Test02 {
 
	public static void main(String[] args) {
		double number1,number2;
		
		System.out.println("=======字符版计算器=======");
		Scanner input = new Scanner(System.in);
		System.out.print("请输入第一个操作数：x=");
		number1 = input.nextDouble();
		System.out.print("请输入第二个操作数：y=");
		number2 = input.nextDouble();
		
		System.out.println("运算结果如下：");
		System.out.println(number1+"+"+number2+"="+(number1+number2));
		System.out.println(number1+"-"+number2+"="+(number1-number2));
		System.out.println(number1+"*"+number2+"="+(number1*number2));
		if(number2 != 0){
			System.out.println(number1+"/"+number2+"="+(number1/number2));
		}
		else {
			System.out.println("除数为0，运算无意义。");
		}
		
	}
 
}