用文件类实现复制功能（并用正则表达式替换里面值）
/* * couter:苏奕祥 * 实现两个文件的复制功能并且用到正则表达式替换复制完后的值 * */import java.io.*;import java.util.regex.Matcher;import java.util.regex.Pattern;public class CopyFile { public static void main(String[] args)throws IOException{ File f=new File("E:\\sdx.txt"); File f2=new File("E:\\sdxcopy.txt"); Writer copy=new FileWriter(f2); Writer aaa=null; aaa=new FileWriter(f); aaa.write("I LOVE U I LOVE U I LOVE U\r\nI LOVE U I LOVE U I LOVE U\r\nI LOVE U I LOVE U I LOVE U"); aaa.close(); Reader read=null; read=new FileReader(f); char c[]=new char[1024]; int len=read.read(c); System.out.println(len); read.close(); String str=new String(c,0,len); System.out.println("内容为："+str); Pattern p=Pattern.compile("LOVE"); Matcher m=p.matcher(str); String str2=m.replaceAll("HATE");System.out.println(str2);copy.write(str2);copy.close(); }}? ? 1 楼 suyixiang 昨天 xvcxxc