import java.util.Scanner;

public class Main {

public static void main(String[] args) {

inputStr();

inputInteger();

inputIntInLine();

}

//每行输入一个数值，输入多个数值

public static void inputInteger() {

Scanner scanner = new Scanner(System.in);

String nextLine = scanner.nextLine();

int sum = 0;

while (nextLine != null && !nextLine.equals("")) {

sum += Integer.parseInt(nextLine);

System.out.println(sum);

nextLine = scanner.nextLine();

}

System.out.println("end of input integer");

}

// 每行输入一个字符串，输入多个字符串

public static void inputStr() {

Scanner scanner = new Scanner(System.in);

String nextLine = scanner.nextLine();

while (nextLine != null && !nextLine.equals("")) {

System.out.println(nextLine);

nextLine = scanner.nextLine();

}

System.out.println("end of input string");

}

//输入多个数值，用空格隔开

public static void inputIntInLine() {

Scanner scanner = new Scanner(System.in);

String str = scanner.nextLine();

String[] numstr = str.split(" ");

int[] nums = new int[numstr.length];

for(int i = 0; i < numstr.length; i ++) {

nums[i] = Integer.parseInt(numstr[i]);

}

for(int n: nums) {

System.out.println(n);

}

System.out.println("end of input int in a line");

}

}

做算法题目时用的输入

以下方法在做算法题目时能够正确的结束输入。

import java.util.Scanner;

public class Main{

public static void main(String[] args){

Scanner sc = new Scanner(System.in);

//while(sc.hasNextLine()){

while(sc.hasNext()){

String str = sc.nextLine();

System.out.println(str);

}

sc.close();

}

}