public classFiveKindIO {public static void main(String[] args) throwsException {//被复制的文件

String src = "Regex.java";//复制到哪儿？？

String dest = "Regex02.java";//调用方法实现文件复制

method4(src,dest);

}//基本字符流一次读写一个字符

public static void method1(String src,String test) throwsException{

FileReader fr= newFileReader(src);

FileWriter fw= newFileWriter(test);int len =0;while((len=fr.read())!=-1){

fw.write(len);

}

fr.close();

fw.close();

}//基本字符流一次读写一个字符数组

public static void method2(String src,String test) throwsException{

FileReader fr= newFileReader(src);

FileWriter fw= newFileWriter(test);char[] c = new char[1024];int len =0;while((len=fr.read(c))!=-1){

fw.write(c,0, len);

fw.flush();

}

fr.close();

fw.close();

}//高效字符流一次读写一个字符

public static void method3(String src,String test) throwsException{

BufferedReader br= new BufferedReader(newFileReader(src));

BufferedWriter bw= new BufferedWriter(newFileWriter(test));int len=0;while((len=br.read())!=-1){

bw.write(len);

bw.flush();

}

br.close();

bw.close();

}//高效字符流一次读写一个字符数组

public static void method4(String src,String test) throwsException{

BufferedReader br= new BufferedReader(newFileReader(src));

BufferedWriter bw= new BufferedWriter(newFileWriter(test));char[] c = new char[1024];int len=0;while((len=br.read(c))!=-1){

bw.write(c,0, len);

bw.flush();

}

br.close();

bw.close();

}//高效字符流一次读写一个字符串(读取一行)

public static void method5(String src,String test) throwsException{

BufferedReader br= new BufferedReader(newFileReader(src));

BufferedWriter bw= new BufferedWriter(newFileWriter(test));

String line=null;while((line=br.readLine())!=null){

bw.write(line);

bw.newLine();

bw.flush();

}

br.close();

bw.close();

}

}