docs/HelloWorld.java

import java.io.*;

public class HelloWorld {
  public static void main(String[] argv) {
    BufferedReader in = new BufferedReader(new 
			  InputStreamReader(System.in));
    String name = null;

    try {
      System.out.print("Please enter your name> ");
      name = in.readLine();
    } catch(IOException e) { return; }

    System.out.println("Hello, " + name);
  }
}