W3School TIY Editor

public class Main {

  private String fname = "Bill";

  private String lname = "Gates";

  private String email = "bill@w3school.com.cn";

  private int age = 24;

  public static void main(String[] args) {

    Main myObj = new Main();

    System.out.println("姓名: " + myObj.fname + " " + myObj.lname);

    System.out.println("邮箱: " + myObj.email);

    System.out.println("年龄: " + myObj.age);

  }

}