为什么我的过程变成T（已终止）状态？(Why my process became T （Terminated）State ？)

 一个简单的Java演示 
 
public class Test {
  public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    int number = scanner.nextInt();
    System.out.println(number);
  }
}
 
 我编译了程序并运行它后台： java Test & ，但进程是终止状态并停止了，我只知道原因与scanner.nextInt()函数有关，但我不明白细节。 

A simple Java demo
 
public class Test {
  public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    int number = scanner.nextInt();
    System.out.println(number);
  }
}
 
I compiled the program and run it background : java Test &, but the process was Terminated State and stopped, I just know the reason is related about scanner.nextInt() function, but I don't understand the details. 

原文：https://stackoverflow.com/questions/47078266