Explain the usage of JPanel with example?

Answer 1

JPanel is a container that can hold a set of components and is part of the Java Swing package. JPanel's primary function is to organise components; numerous layouts can be configured in JPanel to improve component organisation; nevertheless, it lacks a title bar.

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Answer 2

JPanel, a part of Java Swing package, is a container that can store a group of components. The main task of JPanel is to organize components, various layouts can be set in JPanel which provide better organization of components, and however it does not have a title bar.

For Example:

Program to create a JPanel with a Border layout and add components to it .

// java Program to create a JPanel with a Border layout and add components to it . import java.awt.event.; import java.awt.; import javax.swing.*; class solution extends JFrame { // JFrame static JFrame f; // JButton static JButton b, b1, b2, b3; // label to diaplay text static JLabel l; // main class public static void main(String[] args) { // create a new frame to stor text field and button f = new JFrame("panel"); // create a label to display text l = new JLabel("panel label"); // create a new buttons b = new JButton("button1"); b1 = new JButton("button2"); b2 = new JButton("button3"); b3 = new JButton("button4"); // create a panel to add buttons and a specific layout JPanel p = new JPanel(new BorderLayout()); // add buttons and textfield to panel p.add(b, BorderLayout.NORTH); p.add(b1, BorderLayout.SOUTH); p.add(b2, BorderLayout.EAST); p.add(b3, BorderLayout.WEST); p.add(l, BorderLayout.CENTER); // setbackground of panel p.setBackground(Color.red); // add panel to frame f.add(p); // set the size of frame f.setSize(300, 300); f.show(); } }

Answer 3

JPanel() : creates a new panel with flow layout.

add(Component c) : adds component to a specified container. setLayout(LayoutManager l) : sets the layout of the container to specified layout manager. updateUI() : resets the UI property with a value from the current look and feel.

Answer 4

A JPanel is a container that is itself a JComponent. A JPanel can contain other components, and it can in turn be contained in another component. Several other classes, such as Box and TabbedPane, also define components that can be used as containers.

Answer 5

JPanel, a part of Java Swing package, is a container that can store a group of components. The main task of JPanel is to organize components, various layouts can be set in JPanel which provide better organisation of components, however it does not have a title bar.

Answer 6

يتم استخدامه لإنشاء لوحة J جديدة مع مخزن مؤقت مزدوج وتخطيط تدفق.لوحة J يتم استخدامها لإنشاء لوحة J جديدة مع تخطيط التدفق والمخزن المؤقت المحدد

Answer 7

JPanel is a general purpose container used to organize and manage the groups of related components. It is a light weight container which can be contained within another container.

Answer 8

wow

Answer 9

JPanel is a Swing's lightweight container which is used to group a set of components together. JPanel is a pretty simple component which, normally, does not have a GUI (except when it is being set an opaque background or has a visual border).