Main.java Source code

Java tutorial

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Here is the source code for Main.java

Source

import java.awt.FontMetrics;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.JTabbedPane;
import javax.swing.JTable;
import javax.swing.JTree;
import javax.swing.plaf.metal.MetalTabbedPaneUI;

public class Main {
    public static void main(String[] args) {
        JTabbedPane tabbedPane = new JTabbedPane();
        tabbedPane.setUI(new MetalTabbedPaneUI() {
            @Override
            protected int calculateTabWidth(int tabPlacement, int tabIndex, FontMetrics metrics) {
                int width = super.calculateTabWidth(tabPlacement, tabIndex, metrics);
                int extra = tabIndex * 50;
                return width + extra;
            }
        });
        tabbedPane.addTab("JTable", new JScrollPane(new JTable(5, 5)));
        tabbedPane.addTab("JTree", new JScrollPane(new JTree()));
        tabbedPane.addTab("JSplitPane", new JSplitPane());

        JPanel p = new JPanel();
        p.add(tabbedPane);

        JFrame frame = new JFrame();
        frame.setContentPane(p);
        frame.pack();
        frame.setVisible(true);
    }
}