process.java

哈夫曼编码 文件压缩 使用java语言对文件进行编码压缩

package hfmCompress;

import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JProgressBar;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.Toolkit;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Color;

public class Process extends JDialog implements Runnable {
	private final int WIDTH = 200, HEIGHT = 100;

	private Toolkit kit = null;

	private int screenWidth = 0, screenHeight = 0;

	private Dimension screenSize = null;

	private JLabel jl = null;

	private JProgressBar jp = null;

	private Font f = new Font("", Font.BOLD, 15);

	private static int nowValue = 0;
	private static String nowLabelText=null;
	private static boolean compress = false,deCompress=false;
	public Process() {
		this.setSize(WIDTH, HEIGHT);
		kit = Toolkit.getDefaultToolkit();
		screenSize = kit.getScreenSize();
		screenWidth = screenSize.width;
		screenHeight = screenSize.height;
		this
				.setLocation((screenWidth - WIDTH) / 2,
						(screenHeight - HEIGHT) / 2);
		this.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
		Container content = this.getContentPane();
		content.setLayout(new FlowLayout());
		jp = new JProgressBar();
		jp.setBackground(Color.WHITE);
		jp.setForeground(Color.GREEN);
		jp.setMaximum(100);
		jp.setMinimum(0);
		jp.setValue(5);
		jp.setStringPainted(true);
		jl = new JLabel("正在读取原文件……");
		jl.setFont(f);
		content.add(jl);
		content.add(jp);
		this.setAlwaysOnTop(true);
	}

	public void setTitle(String newTitleArg) {
		super.setTitle(newTitleArg);
	}	

	public static void setCompressTrue(int nowValueArg,String nowLabelTextArg) {
		compress = true;
		nowValue=nowValueArg;
		nowLabelText=nowLabelTextArg;
	}
	public static void setDeCompressTrue(int nowValueArg,String nowLabelTextArg){
		deCompress=true;
		nowValue=nowValueArg;
		nowLabelText=nowLabelTextArg;
	}

	public void run() {
		try {
			while (true) {
				if (nowValue == 100) {
					return;
				}
				if (compress) {
					compress = false;
					jp.setValue(nowValue);
					jl.setText(nowLabelText);
				} else if(deCompress){
					deCompress=false;
					jl.setText(nowLabelText);
				}else {				
					Thread.sleep(100);
				}

			}
		} catch (Exception e) {

		}
	}

}