MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

import java.awt.Color;
import java.awt.Component;
import java.awt.Graphics;
import java.io.File;

import javax.swing.Icon;
import javax.swing.JFileChooser;
import javax.swing.filechooser.FileView;

public class MainClass {

    public static void main(String[] a) {
        JFileChooser fileChooser = new JFileChooser(".");
        FileView view = new JavaFileView();
        fileChooser.setFileView(view);
        int status = fileChooser.showOpenDialog(null);
        if (status == JFileChooser.APPROVE_OPTION) {
            File selectedFile = fileChooser.getSelectedFile();
            System.out.println(selectedFile.getParent());
            System.out.println(selectedFile.getName());
        } else if (status == JFileChooser.CANCEL_OPTION) {
            System.out.println("JFileChooser.CANCEL_OPTION");
        }
    }
}

class JavaFileView extends FileView {
    Icon javaIcon = new MyIcon(Color.BLUE);

    Icon classIcon = new MyIcon(Color.GREEN);

    Icon htmlIcon = new MyIcon(Color.RED);

    Icon jarIcon = new MyIcon(Color.PINK);

    public String getName(File file) {
        String filename = file.getName();
        if (filename.endsWith(".java")) {
            String name = filename + " : " + file.length();
            return name;
        }
        return null;
    }

    public String getTypeDescription(File file) {
        String typeDescription = null;
        String filename = file.getName().toLowerCase();

        if (filename.endsWith(".java")) {
            typeDescription = "Java Source";
        } else if (filename.endsWith(".class")) {
            typeDescription = "Java Class File";
        } else if (filename.endsWith(".jar")) {
            typeDescription = "Java Archive";
        } else if (filename.endsWith(".html") || filename.endsWith(".htm")) {
            typeDescription = "Applet Loader";
        }
        return typeDescription;
    }

    public Icon getIcon(File file) {
        if (file.isDirectory()) {
            return null;
        }
        Icon icon = null;
        String filename = file.getName().toLowerCase();
        if (filename.endsWith(".java")) {
            icon = javaIcon;
        } else if (filename.endsWith(".class")) {
            icon = classIcon;
        } else if (filename.endsWith(".jar")) {
            icon = jarIcon;
        } else if (filename.endsWith(".html") || filename.endsWith(".htm")) {
            icon = htmlIcon;
        }
        return icon;
    }
}

class MyIcon implements Icon {
    Color myColor;

    public MyIcon(Color myColor) {
        this.myColor = myColor;
    }

    public int getIconWidth() {
        return 16;
    }

    public int getIconHeight() {
        return 16;
    }

    public void paintIcon(Component c, Graphics g, int x, int y) {
        g.setColor(myColor);
        g.drawRect(0, 0, 16, 16);
    }
}