JAVA中怎样把用户输入的字符串存入数组中?

2022-07-31 教育 397阅读

import java.util.Scanner;

import java.util.InputMismatchException;

public class saveInputToArr {

public static void main(String[] args) {

Scanner scan = null;

try {

scan = new Scanner(System.in);

System.out.print( "请输入个数: " );

int inputNum = scan.nextInt();

if( inputNum <= 0 ) {

throw new Exception( "输入有误" );

}

System.out.println( "请输入数字: " );

int arr[] = new int[inputNum];

int num = 0;

int count = 0;

while( count < inputNum ) {

num = scan.nextInt();

arr[count] = num;

count++;

}

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

System.out.print( arr[i] + "  " );

}

} catch ( Exception e ) {

throw new InputMismatchException( "输入有误, 请重新输入" );

} finally {

try {

if ( scan != null ) {

scan.close();

} catch ( Exception e2 ) {

e2.printStackTrace();

}

}

}

}

运行结果为:

请输入个数: 2

请输入数字:99

123

99 123

扩展资料

Java从输入中读取一个数组

import java.util.Scanner;

public class Main { 

public static void main(String[] args) {

// TODO Auto-generated method stub

Scanner sc = new Scanner(System.in);

String str = sc.nextLine().toString();//用nextLine()可以读取一整行,包括了空格,next()却不能读取空格

String arr[] = str.split(" ");//拆分字符串成字符串数组

int a[] = new int[arr.length];

for(int j = 0; j < a.length; j++)

{

a[j] = Integer.parseInt(arr[j]);

System.out.print(a[j] + " ");

}

}

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