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🌟 Introduction

In GUI development, functionality alone is not enough — appearance matters too! 🎯

👉 A well-designed interface improves:

• User experience 😊
• Readability 📖
• Professional look 💻

In this blog, we will learn how to customize:

• 🎨 Colors (background & text)
• 🔤 Fonts
• 🧱 Borders (including border color)

👉 For both AWT and Swing

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🧱 PART 1: Customization in AWT

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🎨 1. Colors in AWT

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✅ Complete Runnable Program

import java.awt.*;

public class AWTColorDemo {
    public static void main(String[] args) {

        Frame frame = new Frame("AWT Colors");

        Button btn = new Button("Click Me");

        btn.setBackground(Color.BLUE);   // background
        btn.setForeground(Color.WHITE); // text color

        frame.setLayout(new FlowLayout());
        frame.add(btn);

        frame.setSize(300, 200);
        frame.setVisible(true);
    }
}

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🔤 2. Font in AWT

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✅ Program

import java.awt.*;

public class AWTFontDemo {
    public static void main(String[] args) {

        Frame frame = new Frame("AWT Font");

        Label label = new Label("Styled Text");

        label.setFont(new Font("Arial", Font.BOLD, 18));

        frame.setLayout(new FlowLayout());
        frame.add(label);

        frame.setSize(300, 200);
        frame.setVisible(true);
    }
}

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🧱 3. Border in AWT (Including Border Color)

👉 AWT does NOT have built-in border support like Swing ❌
👉 But we can simulate borders using Panel + background color trick ✅

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✅ Complete Runnable Program

import java.awt.*;

public class AWTBorderDemo {
    public static void main(String[] args) {

        Frame frame = new Frame("AWT Border");

        frame.setLayout(new FlowLayout());

        // Outer panel (acts as border)
        Panel outer = new Panel();
        outer.setBackground(Color.RED); // border color 🔥
        outer.setLayout(new FlowLayout());

        // Inner panel (actual content)
        Panel inner = new Panel();
        inner.setBackground(Color.WHITE);

        Label label = new Label("AWT Border Example");

        inner.add(label);
        outer.add(inner);

        frame.add(outer);

        frame.setSize(300, 200);
        frame.setVisible(true);
    }
}

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🔍 Explanation

• Outer panel → acts as border
• Background color → border color 🎨
• Inner panel → content

👉 This is a workaround, not a true border

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⚠️ AWT Limitation

👉 No direct border API ❌
👉 Styling is limited

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🧱 PART 2: Customization in Swing (Powerful 🔥)

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🎨 1. Colors in Swing

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✅ Complete Runnable Program

import javax.swing.*;
import java.awt.*;

public class SwingColorDemo {
    public static void main(String[] args) {

        JFrame frame = new JFrame("Swing Colors");

        JButton btn = new JButton("Click Me");

        btn.setBackground(Color.BLUE);
        btn.setForeground(Color.WHITE);

        frame.setLayout(new FlowLayout());
        frame.add(btn);

        frame.setSize(300, 200);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
    }
}

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🧱 2. Borders in Swing (Including Border Color)

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✅ Complete Runnable Program

import javax.swing.*;
import javax.swing.border.*;
import java.awt.*;

public class SwingBorderDemo {
    public static void main(String[] args) {

        JFrame frame = new JFrame("Swing Border");

        JButton btn = new JButton("Styled Button");

        // Border with color
        Border border = BorderFactory.createLineBorder(Color.RED, 3);

        btn.setBorder(border);

        frame.setLayout(new FlowLayout());
        frame.add(btn);

        frame.setSize(300, 200);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
    }
}

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🔍 Explanation

• createLineBorder(Color, thickness)
• Color defines border color 🎨

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✨ 3. Advanced Border Types

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✅ Program

import javax.swing.*;
import javax.swing.border.*;
import java.awt.*;

public class AdvancedBorderDemo {
    public static void main(String[] args) {

        JFrame frame = new JFrame("Advanced Borders");

        JButton btn = new JButton("Fancy Button");

        Border border = BorderFactory.createTitledBorder(
            BorderFactory.createLineBorder(Color.BLUE, 2),
            "My Border"
        );

        btn.setBorder(border);

        frame.setLayout(new FlowLayout());
        frame.add(btn);

        frame.setSize(300, 200);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
    }
}

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🔤 4. Fonts in Swing

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✅ Program

import javax.swing.*;
import java.awt.*;

public class SwingFontDemo {
    public static void main(String[] args) {

        JFrame frame = new JFrame("Swing Font");

        JLabel label = new JLabel("Styled Text");

        label.setFont(new Font("Verdana", Font.BOLD, 20));

        frame.setLayout(new FlowLayout());
        frame.add(label);

        frame.setSize(300, 200);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
    }
}

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⚖️ AWT vs Swing (Styling Perspective)

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Feature	AWT	Swing
Colors	Basic	Advanced
Fonts	Limited	Flexible
Borders	Manual workaround ❌	Direct support ✅
Border Color	Trick-based	Direct property 🎨

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⚠️ Common Mistakes

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❌ Expecting AWT border like Swing

👉 AWT does not support it directly

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❌ Forgetting BorderFactory import

import javax.swing.border.*;

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❌ Button color not visible

👉 Depends on system Look & Feel

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❌ Mixing AWT & Swing

👉 Causes UI inconsistency

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🤯 Common Confusions

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🤔 Why AWT borders are difficult?

👉 Because AWT relies on OS components

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🤔 Why Swing borders are easy?

👉 Fully Java-controlled rendering

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💼 Interview Questions

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❓ How to set border color in Swing?

👉 BorderFactory.createLineBorder(Color.RED)

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❓ Does AWT support borders?

👉 Not directly — requires workaround

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❓ Which is better for styling?

👉 Swing

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🎯 Best Practices

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✔️ Use Swing for modern UI
✔️ Use consistent color scheme
✔️ Keep UI clean
✔️ Avoid over-styling

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🏁 Conclusion

Now you can make your GUI:

👉 Functional ✔️
👉 Interactive ✔️
👉 Beautiful 🎨✨

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💡 Final Thought

👉 Good UI = Good impression 💯

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🔥 One-Line Summary

👉 “Swing provides direct and powerful styling features, while AWT has limited customization options.”

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💻 Happy Coding! 😄

Next step: Event Delegation Model (deep dive) 🔥