showfile.java

介绍有关java的资料 课件 相当一本书籍 里面都是很基础的知识

/**
 * Title:        Java网络编程演示
 * Description:  Java网络编程演示，用于北京师范大学计算机系Java课程教学示范。
 * Copyright:    Copyright (c) 2001
 * Company:      北京师范大学计算机系
 * @author 孙一林
 * @version 1.0
 */
		import java.io.*;
		import java.net.*;
		import java.awt.*;
		import java.applet.*;
		public class showfile extends Applet {
			URL fileur;
			TextArea showarea = new TextArea("I will get text",0,100);
			public void init() {
				String url = "http://www.bnu.edu.cn";
				try {
					fileur = new URL(url);
				}
				catch ( MalformedURLException e) {
					System.out.println("Can't get URL: " );
				}
				add(showarea);
			}
			public void paint(Graphics g) {
				InputStream filecon = null;
				DataInputStream filedata = null;
				String fileline;
				try {
					filecon = fileur.openStream();
					filedata = new DataInputStream(filecon);
					while ((fileline = filedata.readLine()) != null) {
						showarea.setText(fileline+"\n");//.append(fileline+"\n");//.appendText(fileline+"\n");
					}
				}
				catch (IOException e) {
					System.out.println("Error in I/O:" + e.getMessage());
				}
			}
		}