public class FiveKindIO {
public static void main(String[] args) throws Exception {
//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) throws Exception{
FileReader fr = new FileReader(src);
FileWriter fw = new FileWriter(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) throws Exception{
FileReader fr = new FileReader(src);
FileWriter fw = new FileWriter(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) throws Exception{
BufferedReader br = new BufferedReader(new FileReader(src));
BufferedWriter bw = new BufferedWriter(new FileWriter(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) throws Exception{
BufferedReader br = new BufferedReader(new FileReader(src));
BufferedWriter bw = new BufferedWriter(new FileWriter(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) throws Exception{
BufferedReader br = new BufferedReader(new FileReader(src));
BufferedWriter bw = new BufferedWriter(new FileWriter(test));
String line=null;
while((line=br.readLine())!=null){
bw.write(line);
bw.newLine();
bw.flush();
}
br.close();
bw.close();
}
}