转换流将GBK文件转换为UTF-8文件

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Demo02_test {

public static void main(String[] args) throws IOException {
	//File file = new File("C://File//utf8.txt");
	InputStreamReader isr = new InputStreamReader(new FileInputStream("C://File//gbk.txt"),"GBK");
	OutputStreamWriter osw = new OutputStreamWriter(new FileOutputStream("C://File//utf8.txt"),"UTF-8");
	
	int len = 0;
	while((len = isr.read()) != -1){
		osw.write(len);
	}
	isr.close();
	osw.close();
	System.out.println("转换完成");
	
	
}

}