jm.java

图形界面

package 读取关键字soft29;
import java.awt.*;
import java.io.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
public class  Jm extends JFrame {

	private JTextArea textArea;
	/**
	 * @param args
	 */
	String Filepath;
	String keyword[]={"cout","cin","for","main","while","public","return"};
	int KeyWordCount[];
	
	public static void main(String[] args) 
	{
		
		
		new Jm();

	}
	public Jm() {
		super("关键字查询");
		
		this.setSize(525,400);
		getContentPane().setLayout(null);

		final JButton 打开文件 = new JButton();
		打开文件.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) 
			{
				FileDialog fd=new FileDialog(Jm.this);//添加浏览文件的面板
				fd.setVisible(true);//显示面板
				String str=fd.getDirectory()+fd.getFile();
				if (!str.equals("") &&str!=null &&(str.endsWith(".cpp")||str.endsWith(".h")) )
				
					{Filepath=str;
					textArea.append(readFile());}
				else 
					//JOptionPane.showConfirmDialog(Jm.this, "输入尤物");
				JOptionPane.showMessageDialog(Jm.this, "输入出错 请输入cpp或.h文件");
			}
		});
		打开文件.setText("打开文件");
		打开文件.setBounds(70, 40, 101, 25);
		getContentPane().add(打开文件);

		final JButton 寻找关键字 = new JButton();
		寻找关键字.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) 
			{
				comp( textArea);
			}
		});
		寻找关键字.setText("寻找关键字");
		寻找关键字.setBounds(330, 40, 101, 25);
		getContentPane().add(寻找关键字);

		final JScrollPane scrollPane = new JScrollPane();
		scrollPane.setBounds(70, 124, 358, 177);
		getContentPane().add(scrollPane);

		textArea = new JTextArea();
		scrollPane.setViewportView(textArea);
		
		this.setVisible(true);
		
	}
	
	String readFile(){
		File file=new File(Filepath);
		if (file.exists()){
			try{
				BufferedReader in=new BufferedReader(new FileReader(file));
				char buf[]=new char[10000];
				in.read(buf);
				return String.valueOf( buf).trim();
				//return in.readLine();
			}catch(Exception e){}
			}
		return "sorry";
		
	}
	public void comp(JTextArea t)
	{
		String str;
		KeyWordCount=new int[keyword.length];
		File file=new File(Filepath);
		if(!file.exists())
			t.append("没有找到文件");
		else
		{
			try
			{
				BufferedReader in =new BufferedReader(new FileReader(file));
				int j=1;
				while((str=in.readLine())!=null)
				{
					str=repStr(str);

					if (!str.equals(""))
					{
				       	String split[]=str.split(" ");
					    for(int i=0;i<split.length;i++)
					    {
					    	split[i]=split[i].trim();
					    	if ( verifyKeyWord( split[i] ) )
					    	{
					    		t.append("在第"+(j)+"行找到关键字"+split[i]+"\n");
					    	}
					    }
					}
					j++;
				}
				for (int i=0;i<keyword.length;i++){
					if (KeyWordCount[i]>0)
					t.append("关键字 "+keyword[i]+" 出现次数："+KeyWordCount[i]+"\n");	
					}
			}
			catch(Exception e){t.append("出错");}
		}
		
	}
	
	boolean verifyKeyWord(String s){
		
		for (int j=0;j<keyword.length;j++){
			if(s.equals(keyword[j])){
				KeyWordCount[j]++;
				return true;
			}
		}
		
		return false;
	}
    public String repStr(String s)
    {
         String str="";
		
		for (int i=0;i<s.length();i++){
			char c=s.charAt(i);
			if ( c>=65 && c<=90 ||c>=97 && c<=122 )
				str+=c;
			else
				str+=' ';
		}
		
		return str.trim();
    }
    

}