Java creating objects as arguments to functions

Question

Since, I get used to code in javascript, I want to create objects with properties.

Here is my code:

jPanel2.add( new JPanel(){ this.add(new JButton("Add")); });

Do you have any suggestions ?

`jPanel2.add( new JPanel("Text"));` – Ved May 22 '12 at 13:27 — Ved, May 22 '12 at 13:27
i want to add a JPanel, which has a button, inside jPanel2 – Yunus Eren Güzel May 22 '12 at 13:29 — Yunus Eren Güzel, May 22 '12 at 13:29

score 6 · Accepted Answer · answered May 22 '12 at 13:29

6

You can always use this syntax:

container.add(new JPanel() {{ this.add(new JButton("Add")); }});

Full example:

public static void main(String[] args) throws Exception {

    JFrame frame = new JFrame("Test");

    frame.add(new JPanel() {{ this.add(new JButton("Add")); }});

    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.pack();
    frame.setVisible(true);
}

answered May 22 '12 at 13:29

dacwe

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Just a warning: http://stackoverflow.com/questions/924285/efficiency-of-java-double-brace-initialization – Matt Ball May 22 '12 at 13:30
1

Field initializer in anonymous class body?? Genius!! – billc.cn May 22 '12 at 13:31
@DavidB I wouldn't say that it's unreadable, sometimes it's really neat! :) – dacwe May 22 '12 at 13:34

Java creating objects as arguments to functions

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