展开全部
import java.util.Scanner;
import java.util.InputMismatchException;
public class saveInputToArr {
public static void main(String[] args) {
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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：
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] + " ");
}
}
}