Question

求Java大佬帮忙

Answer 1

public class Test{

public static void main(String[] args) {

Student stu=new Student("张三",22);

stu.show();

stu.setInfo("李四", 19);

stu.show();

//乘法表

for(int i=1;i<10;i++) {

for(int j=1;j<=i;j++) {

System.out.print(j+"x"+i+"="+(j*i)+"\t");

}

System.out.println();

}

}

}

class Student {

private String name;

private int age;

Student(String name,int age){

this.name=name;

this.age=age;

}

public void setInfo(String name,int age) {

this.name=name;

this.age=age;

}

public void show() {

System.out.println("Name:"+name+";Age:"+age);

}

}

Answer 2

Student类：
public class Student{
private String name;
private int age;
public void setInfo(String name,int age){
this.name = name;
this.age=age;
}
public void show(){
System.out.println("我叫"+this.name+",我今年"+this.age+"岁！");
}
}
Test类：

import java.util.Scanner;
public class Test{
public static void main(String[] args) {
try { //输入异常处理
Student s = new Student();
System.out.print("请输入你的姓名：");
String str = new Scanner(System.in).next();
System.out.print("请输入你的年龄：");
int num = new Scanner(System.in).nextInt();
while (num<=0) {
System.out.println("年龄必须大于0!\n");
System.out.print("请输入你的年龄：");
num = new Scanner(System.in).nextInt();
}
s.setInfo(str, num);
s.show();
} catch (Exception e) {
System.out.println("年龄输入有误，程序结束！");
}

}
}