如何在Java中从用户控制台获取输入[重复]

Question

此 C++ 代码片段的 Java 等效项是什么：

string str ;
while(cin>>str){
   //code
}

Answer 1

类似这样的事情

String str ; 
while((str = System.in.readLine()) != null){
   //code
}

Answer 2

Scanner scanner = new Scanner(System.in);
String sentence = scanner.nextLine();

Answer 3

Scanner scanner = new Scanner(System.in);
boolean flag = true;
while(flag)
{
   String str = scanner.nextLine();

   // Add any condition to set flag = false to exit from while loop
}

Answer 4

您可以使用 GUI 风格来完成。

import javax.swing.JOptionPane;
String Input=JOptionPane.showInputDialog("Title","Message");