Question

java 输入多个数字

Java 中的Scanner类

如何用循环实现输入多个数字啊？？？
我是个初学者 各位大哥大姐 前辈们帮帮忙啊
import java.util.*;
public class jiafa
{
public static void main(String[] arg)
{
int i;
System.out.print("请输入数值number1和number2 ：");
for(i=1;i<=2;i++)
{
Scanner number=new Scanner(System.in);
number1=number.nextInt();
number2=number.nextInt();
}
int number1,number2;
number2=number1+number2;
System.out.println("number2 is " +number2);

}

}

下面这个是一个一个输入的没有用循环
import java.util.*;
public class jiafa1
{
public static void main(String[] arg)
{

System.out.print("请输入数值number1和number2 ：");

int number1,number2;
Scanner number=new Scanner(System.in);
number1=number.nextInt();

Scanner number0=new Scanner(System.in);
number2=number0.nextInt();

number2=number1+number2;

System.out.println("number2 is: "+number2 );

}

}

Answer 1

import java.util.Scanner;

public class NumReader {

private static Scanner san = new Scanner(System.in);

public static void main(String[] args) {
int len = 0;
System.out.print("你想输入多少个数字: ");
len = san.nextInt();
int [] numbers = new int[len];
for(int i = 0; i < len; i ++) {
System.out.print("请输入第" + (i + 1) + "个数字: ");
numbers[i] = san.nextInt();
}
System.out.print("你输入的" + len +"数字分别是: ");
for(int i: numbers) {
System.out.print(i + " ");
}
}

Answer 2

import java.util.Scanner;

public class TestInPut {

public static void main(String[] args) {
Scanner c=new Scanner(System.in);
int[] i=new int[2];
for(int j=0;j<2;j++){
i[j]=c.nextInt();
}
System.out.println(i[0]+i[1]);
}

}