import java.util.Scanner; public class Test { public static void main(String[] args) { System.out.p

import java.util.Scanner;

public class AddNums {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner scan = new Scanner(System.in);
System.out.println("请输入要相加的数，并用空格隔开");
int sum = 0;
while(scan.hasNextInt())
{
sum += scan.nextInt();
}
System.out.println("\n" + "和为：" + sum);
}

}

import java.util.*

public class test
{
public static void main(String[] ar)
{
Scanner scan = new Scanner(System.in);
String str = scan.nextLine(); //输入一个字符串给str
Int a = scan.nextInt(); //输入一个数字给 a
double b = scan.nextDouble();//输入一个浮点给 b
System.out.println(str + "\t" + a + "\t" + b);
}
}

你这是想问些什么呢？