java读入输出文件字符串

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import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

public class file {

/**

* @param args

* @throws IOException

public static void read() throws IOException{

String fileName = "Compound.txt";

File file= new File(fileName);

//打开文件和关闭文件一次

BufferedReader reader = new BufferedReader(new FileReader(file));

BufferedWriter writer = new BufferedWriter(new FileWriter(new File("rs.txt")));

String tempString = null;

try {

tempString = reader.readLine();

} catch (IOException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

}

while(tempString!= null&&tempString.length()>0){

//分割字符串

String str1= null;

String str2= null;

String[] subs = tempString.split( "\t");

str1=subs[0];

str2=subs[1];

String str3=str2.substring(59);

System. out.println(str1+"\t" +str3);

//write

try{

writer.write(str1+ "\t"+str3);

writer.write( "\n");

} catch(Exception e){

}

tempString = reader.readLine();

}

writer.close();

reader.close();

}