CODEWITHSUNDEEP
javapythonswinguser-interfacejython
Joseph Castleberry
Joseph Castleberry

Reputation: 39

Trouble with Jython GUI

I am having a problem with my Jython GUI. I need to make the text field appear. I believe I am running into a problem with the Layout, but I am unsure about how to create a new FlowLayout in Jython.

#!/usr/bin/env jython

# Created by Joe Castleberry
# 2013 

# Imports
from javax.swing import * 
from java.awt import *

class Window: 
    def __init__(self): 
        # Global variables
        global frame
        global label
        global container
        global text

        # Definition of global variables
        frame = JFrame("Joe's first Java program")
        label = JLabel("Hello World!", JLabel.CENTER)
        container = JPanel()
        text = JTextField(10)

    def builder(self):  
        # Building container
        container.setLayout(None)
        container.setBackground(Color.BLACK)

        # Building frame
        frame.getContentPane().add(container)       # Adding Container to JFrame
        frame.setSize(300,300)
        frame.setVisible(True)
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE)

        # Adding components to container
         container.add(text)



a = Window()
a.builder()

Upvotes: 1

Views: 452

Answers (1)

rimero
rimero

Reputation: 2383

I added the changes with a comment above starting with CHANGED. Your code works with minor modifications.

1) Do use layouts, don't set the layout to None, no absolute layout manager, etc.

2) Add components to the main content pane container before you pack the frame. If not, you'll need to revalidate the container among other things (with a possible repaint after the frame is visible).

#!/usr/bin/env jython

# Created by Joe Castleberry
# 2013 

# Imports
from javax.swing import * 
from java.awt import *

class Window: 
    def __init__(self): 
        # Global variables
        global frame
        global label
        global container
        global text

        # Definition of global variables
        frame = JFrame("Joe's first Java program")
        label = JLabel("Hello World!", JLabel.CENTER)
        container = JPanel()
        text = JTextField(10)

    def builder(self):  
        # Building container
        # CHANGED Removed container.setLayout(None)
        container.setBackground(Color.BLACK)
        # CHANGED Move the add text call here
        container.add(text)

        # Building frame
        frame.getContentPane().add(container)
        frame.setSize(300,300)
        frame.setVisible(True)
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE)



a = Window()
a.builder()

Upvotes: 3

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