alice.java

来自「java 语言实现查找alice个数 呷阿根阿哥」· Java 代码 · 共 45 行

import java.io.*;
import java.util.regex.*;
import javax.swing.JOptionPane;

public class alice {
    
    public static void main(String[] args) throws IOException{
    	
      String fileName;
      String filePath;
      
      filePath=JOptionPane.showInputDialog("请输出文件的路径：");
	  fileName=JOptionPane.showInputDialog("请输出文件的名字：");
	  File name=new File(filePath, fileName);
	  
	  try{		  
      BufferedReader buf = new BufferedReader(new FileReader(name));
      StringBuffer sbuf = new StringBuffer();//缓冲字符串
      String line = null;
      
      while((line = buf.readLine())!=null){
         sbuf.append(line);//追加到缓冲字符串中
      }
      
      buf.close();//读取结束
      String str = sbuf.toString();
      Pattern p = Pattern.compile("Alice");//定义正则表达式匹配单词
      Matcher m = p.matcher(str);
      /* StringBuffer sb = new StringBuffer();*/
      int i=0;
      boolean result = m.find();
      while(result) {
        i++;    
      result = m.find();
      }
      System.out.println(i);
      JOptionPane.showMessageDialog(null , "Alice的数目是："+i, "结果", JOptionPane.PLAIN_MESSAGE);
      }
	 catch(IOException ioEception){
		 JOptionPane.showMessageDialog(null , "文件不存在或路径错误或文件没有带上后缀", "错误", JOptionPane.PLAIN_MESSAGE);
	  }	
	 
    }
}