Getting an input from the user console - Java code [duplicate]

Question

This question already has answers here:

Java: How to get input from System.console() (9 answers)

Closed 8 years ago.

What is a Java equivalent for this C++ code snippet:

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

Answer 1

Something like this

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

you can do it either with a GUI style .

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