main.java

这个是JAVA实验里的一个输入输出文件操作

/*
 * StudentMainClass.java
 *
 * Created on 2008年5月12日, 上午10:42
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package 输入输出;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import java.util.StringTokenizer;
import javax.sound.sampled.*;
/**
 *
 * @author Administrator
 */
public class Main{
    
    /** Creates a new instance of StudentMainClass */
    public Main() {
    }
    
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        new StudyFrame();
        // TODO code application logic here
    }
    
}
class Chinese  {
	public StringBuffer getChinesecharacters(File file)
	{
		StringBuffer hanzi=new StringBuffer();
		try{
			FileReader inOne=new FileReader(file);//////////
			BufferedReader inTow=new BufferedReader(inOne);/////////
			String s=null;
			int i=0;
			while((s=inTow.readLine())!=null)/////////
			{
				StringTokenizer tokenizer=new StringTokenizer(s,",'\n'");
				while(tokenizer.hasMoreTokens())
				{
					hanzi.append(tokenizer.nextToken());
					
				}
			}
				
		}
		catch(Exception e){}
		return hanzi;
		
	}

}
class StudyFrame extends Frame implements ItemListener,ActionListener,Runnable {
	Chinese chinese;
	Choice choice;
	Button getCharacters,getPre,voiceCharacters;//..................
	Label showCharacters;
	StringBuffer trainedChinese=null;
	Clip clip=null;
	Thread voiceThread;
	int k=1,b=0,n=0,a=0;
        boolean t_n=false,t_b=false,t_c=true,t_d=true;
	Panel pCenter;
	CardLayout mycard;
	TextArea textHelp;
	MenuBar menubar;
	Menu menu;
	MenuItem help;
	public StudyFrame()
	{
		chinese=new Chinese();
		choice = new Choice();
		choice.add("E:\\a.txt");
		choice.add("E:\\b.txt");
		choice.add("E:\\c.txt");
		showCharacters=new Label("",Label.CENTER);
		showCharacters.setFont(new Font("宋体",Font.BOLD,72));
		showCharacters.setBackground(Color.green);
                getPre=new Button("上一个汉字");//.............
		getCharacters=new Button("下一个汉字");
		voiceCharacters=new Button("发音");
		voiceThread=new Thread(this);
		choice.addItemListener(this);
		voiceCharacters.addActionListener(this);
                getPre.addActionListener(this);//................
		getCharacters.addActionListener(this);
		Panel pNorth=new Panel();
		pNorth.add(new Label("选择一个汉字字符组成的文件"));
		pNorth.add(choice);
		add(pNorth,BorderLayout.NORTH);
		Panel pSouth=new Panel();
                pSouth.add(getPre);//............
		pSouth.add(getCharacters );
		pSouth.add(voiceCharacters );
		add(pSouth,BorderLayout.SOUTH);
		pCenter=new Panel();
		mycard=new CardLayout();
		pCenter.setLayout(mycard);
		textHelp=new TextArea();
		pCenter.add("hanzi",showCharacters);
		pCenter.add("help",textHelp);
		add(pCenter,BorderLayout.CENTER);
		menubar=new MenuBar();
		menu=new Menu("帮助");
		help=new MenuItem("关于学汉字");
		help.addActionListener(this);
		menu.add(help);
		menubar.add(menu);
		setMenuBar(menubar);
		setSize(350,220);
		setVisible(true);
		addWindowListener(new WindowAdapter()
        {
            public void windowClosing(WindowEvent e)
            {
                System.exit(0);
                
            }
        });
		validate();
       }
	public void itemStateChanged(ItemEvent e)
	{
		String fileName=choice.getSelectedItem();
		File file=new File(fileName);
		trainedChinese=chinese.getChinesecharacters(file);
		k=1;b=trainedChinese.length();
		mycard.show(pCenter,"hanzi");
	}
	public void actionPerformed(ActionEvent e)
	{
		if(e.getSource()==getCharacters)
		{
			if(trainedChinese!=null)
			{
                            if(t_c){
				char c=trainedChinese.charAt(k-1);
				k++;
				if(k>trainedChinese.length())
				k=1;
                                n=k-2;
				showCharacters.setText(""+c);
                                
                            }
                            else if(t_n){
                                char c=trainedChinese.charAt(a);
				a++;
				if(a>=trainedChinese.length())
				a=0;
                                n=a-2;
				showCharacters.setText(""+c);
                            }
                                
			}
			else {
				showCharacters.setText("请选择一个汉字字符文件");
			}
		}
                else 
                if(e.getSource()==getPre)
		{
                 
			if(trainedChinese!=null)
			{
                            t_c=false;
                           if(n>0){
                               
                               
                               char c=trainedChinese.charAt(n-1);
				n--;
				if(n<1)
				n=trainedChinese.length();
				showCharacters.setText(""+c);
                              
                              a=n+2;
                              t_n=true;
                           }
                           else{                                
                               char c=trainedChinese.charAt(b-1);
				b--;
				if(b<=0)
				b=trainedChinese.length();
				showCharacters.setText(""+c);
                                t_b=true;
			}
                        }
			else {
				showCharacters.setText("请选择一个汉字字符文件");
			}
		
                }
                else 
		if(e.getSource()==voiceCharacters)
		{
			if(!(voiceThread.isAlive()))
			{
				voiceThread=new Thread(this);
			}
			try{
				voiceThread.start();
			}
			catch(Exception exp){}
			
		}
			if(e.getSource()==help)
			{
				mycard.show(pCenter,"help");
				try{
					File helpFile=new File("E:\\help.txt");
					FileReader inOne=new FileReader(helpFile);
					BufferedReader inTow=new BufferedReader(inOne);
					String s=null;
					while((s=inTow.readLine())!=null)
					{
						textHelp.append(s+"\n");
					}
					inOne.close();
					inTow.close();
					}
				catch(IOException exp){}
				
			}
		}
	public void run()
	{
		voiceCharacters.setEnabled(false);
		try{
			if(clip!=null)
			{
				clip.close();
			}
			clip=AudioSystem.getClip();
			File voiceFile=new File(showCharacters.getText().trim()+",wav");
			clip.open(AudioSystem.getAudioInputStream(voiceFile));
		}
		catch(Exception exp){}
		clip.start();
		voiceCharacters.setEnabled(true);
		}
}