Java 将键盘中的输入保存到数组

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( "\u8f93\u5165\u6709\u8bef\u002c\u0020\u8bf7\u91cd\u65b0\u8f93\u5165" );
        } finally {
            try {
                if ( scan != null ) {
                    scan.close();
                } 
            } catch ( Exception e2 ) {
                e2.printStackTrace();
            }
        }
        
    }

}

 

 

运行结果为：

 

转载于:https://www.cnblogs.com/dgm2088/p/10256580.html