输入一组数，以回车结束输入 java

1. 大概就是下面的模式

Scanner scanner = new Scanner(System.in);
String s = scanner.nextLine();
Scanner sc = new Scanner(s);
while(sc.hasNextInt()){
      arr[i++] = sc.nextInt();
}

2.输入整数

这里以输入一组整数为例，当输入回车就结束输入，打印出数组内容

import java.util.Scanner;

public class Test01 {
    public static void main(String[] args) {
        int[] arr = new int[max];
        int i = 0;

        Scanner scanner = new Scanner(System.in);
        String s = scanner.nextLine();
        Scanner sc = new Scanner(s);
        while(sc.hasNextInt()){
            arr[i++] = sc.nextInt();
        }

        System.out.print("[");
        for(int j=0;j<i;j++){
            if(j==i-1)
                System.out.print(arr[j]);
            else
                System.out.print(arr[j]+", ");
        }
        System.out.println("]");
    }
    public static final int max = 1000;
}

输出结果：

3. 输入字符串

知道了模式是怎样的，也知道了如何输入一组整数，以回车结束输入，那么字符串也是一样的道理

import java.util.Scanner;

public class Test01 {
    public static void main(String[] args) {
//        int[] arr = new int[max];
//        int i = 0;
//
//        Scanner scanner = new Scanner(System.in);
//        String s = scanner.nextLine();
//        Scanner sc = new Scanner(s);
//        while(sc.hasNextInt()){
//            arr[i++] = sc.nextInt();
//        }
        String[] arr = new String[max];
        int i=0;

        Scanner scanner = new Scanner(System.in);
        String s = scanner.nextLine();
        Scanner sc = new Scanner(s);
        while (sc.hasNextLine()){
            arr[i++] = sc.nextLine();
        }

        System.out.print("[");
        for(int j=0;j<i;j++){
            if(j==i-1)
                System.out.print(arr[j]);
            else
                System.out.print(arr[j]+", ");
        }
        System.out.println("]");
    }
    public static final int max = 1000;
}

输出结果：