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Getting a portion of the content: int offset = 5 Ĭontent = textField.getText(offset, length).Getting all content: String content = textField.getText().Getting or setting content of the text field Panel.add(textField, gridbagConstraints) 3. Add a JTextField to the container with a specific layout manager:įrame.add(textField, BorderLayout.CENTER).A JTextField can be added to any container like JFrame, JPanel, JDialog or JApplet:.If the number of columns is not specified, its default value is 0 (then the text field’s width is calculated based on the initial text).If the initial text is not specified, its default value is null (the text field is empty).Create a default and empty text field then set the text and the number of columns later:.JTextField textField = new JTextField("This is a text", 20) Create a text field with both initial text and number of columns:.JTextField textField = new JTextField(20) Create a text field with a specified number of columns:.
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JTextField textField = new JTextField("This is a text") Create a text field with some initial text:.Creating a JTextField objectWhen creating a text field component, it’s common to specify some initial text and/or a number of columns from which the field’s width is calculated. Getting or setting content of the text fieldġ.This article lists common practices when using JTextField in Swing development. JTextField is a fundamental Swing’s component that allows users editing a single line of text.