Pass values entered in one JFrame's text field as an input parameter in other JFrame

Question

How to pass values entered in one JFrame's text field as an input parameter in other JFrame?

Entered user name and password in first JFrame through JTextFields..

String usr = jTextField2.getText();
String pass = jTextField3.getText();

Same username and password should be given as input in forth frame each frame is redirected to other on button click

You mean passing the username and password to other jtextfield's frames? — Azad, Jul 01 '13 at 20:19
Hi Azad , Thanks for your response .. :) I don't want the data to be populated in other frames text field.. i want the data as input in the code backend.. — Raghu Nandiraju, Jul 01 '13 at 20:25
I think, I understood you finally, you mean each frame has a two strings ( user, pass), am I right? — Azad, Jul 01 '13 at 20:33
yes Azad...The code that i use in second form is getLogger().info("ConnectToDevice using: "+networkElement+" : "+getUsername()+" : "+getPassword()); for which i need values entered in text fields of form1 — Raghu Nandiraju, Jul 01 '13 at 20:36
See [The Use of Multiple JFrames, Good/Bad Practice?](http://stackoverflow.com/a/9554657/418556) — Andrew Thompson, Jul 02 '13 at 03:40

score 8 · Answer 1 · edited Feb 18 '14 at 22:59

Suppose you have many frames, you have to create instance variables for that purpose. If you don't know what an instance variable see this tutorial. Lets see an example:

This will be your frame that sends the variables :

public class MainFrame {
    public void actionPerformed(ActionEvent ev) {
    String user = userField.getText();
    String pass = passField.getText();
    FrameOne frameOne = new FrameOne();
    frameOne.setUser(user);
    frameOne.setPass(pass);

    /* 
     * You've passed the user and pass to other frame,
     * now you can make it visible.
     */
    frameOne.setVisible(true);
 }

And this will be your first frame:

public class FrameOne extends JFrame {
    private JTextField userField;
    private JTextField passField;

    // then create setters and getter
    public void setUser(String user) {this.userField.setText(user);}
    public String getUser() {return this.userField.getText();}

    public void setPass(String pass) {this.passField.setText(pass);}
    public String getPass() {return this.passField.getText();}

    public FrameOne() {
        //define the components here
    }
}

NOTE : I didn't compile the code, this is only for demonstration on your problem.

@RaghuNandiraju: You are welcome, this is your first question, So, please consider if the answer were accepted or not. See this question on SO: [How does accepting an answer work?](http://meta.stackexchange.com/questions/5234/how-does-accepting-an-answer-work). And see [StackOverFlow/about](http://stackoverflow.com/about) it's very useful. — Azad, Jul 01 '13 at 21:00

score 3 · Answer 2 · answered Jul 02 '13 at 03:17

You can also pass values to the constructor like this

Your main frame

public class MainFrame{
      //
      public void actionPerformed(ActionEvent ev){

       FrameOne frameOne = new FrameOne(userField.getText(), passField.getText());

       //you've passed the user and pass to other frame.
       // then you can make it visible.
       frameOne.setVisible(true);
     } 
}

Your next frame

public class FrameOne extends JFrame{
  private String user;
  private String pass;

  public FrameOne(String usr, String pas){
    this.user=usr;
    this.pass=pas;
    //define the components here
 }
}

score 0 · Answer 3 · answered Mar 25 '16 at 11:04

0

first create publicly static type variable

public static JTextField txt2; public JTextField txt1,button1;

//action button1 in 1st JFrame

JFrame2.setVisible(true); JFrame2.txt2.setText(Me.txt1.getText());

answered Mar 25 '16 at 11:04

Saquib Azam

73
1
4

score 0 · Answer 4 · answered Jul 19 '17 at 11:45

Suppose u have two class like this:

for login.java
----------------
suppose u r calling welcome.java:
Welcome wc= new Welcome(new JFrame(), true);
after this line call a method of welcome.java which u have to create like:
wc.setUser(username);

for welcome.java
------------------

create a method:void setUser(String username) {
        user1 = user; 
        cname.setText(user1);
    }

user1 is global variable and available for all which u have to define lke:
String user1;
after it is assigning the username value to user1
here cname is a label which name is cname;
so, we are seeting the text of cname to the user.

Pass values entered in one JFrame's text field as an input parameter in other JFrame

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