文件的读取

package com.jzh.io;import java.io.BufferedReader;import java.io.FileNotFoundException;import java.io.FileReader;import java.io.FileWriter;import java.io.IOException;import java.io.StringReader;public class TestReader {public String getReader(String s){FileReader fr=null;StringBuffer sb=new StringBuffer() ;BufferedReader br=null;try {fr=new FileReader(s);br=new BufferedReader(fr);while(true){String str=br.readLine();if(str==null){break;}sb.append(str);}} catch (FileNotFoundException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}try {fr.close();br.close();} catch (IOException e) {e.printStackTrace();}return sb.toString();}public void setWriter(String str){FileWriter fw=null;try {fw=new FileWriter("E:/c.txt");fw.write(str);} catch (IOException e) {e.printStackTrace();}try {fw.close();} catch (IOException e) {e.printStackTrace();}}public static void main(String[] args){TestReader tr=new TestReader();String a=tr.getReader("E:/a.txt");String b=tr.getReader("E:/b.txt");String c=a+b;System.out.println(c);tr.setWriter(c);}}