字节流和字符流的转换类
OutputStreamWriter：是Writer的子类，将输出的字符流变成字节流
InputStreamReader：是Reader的子类，将输入的字节流变成字符流
将字节输出流变成字符输出流
//=================================================
// File Name : OutputStreamWriter_demo
//------------------------------------------------------------------------------
// Author : Common
import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
//主类
//Function : 从文件中读取内容
public class OutputStreamWriter_demo {
public static void main(String[] args) throws Exception {
// TODO 自动生成的方法存根
File f = new File("/home/common/software/coding/HelloWord/HelloWord/test.txt");//路径
Writer out = null;
out = new OutputStreamWriter(new FileOutputStream(f)); //字节流变成字符流
out.write("HelloWord");
out.close();
}
}
将字节输出流变成字符输出流
//=================================================
// File Name : InputStreamReader_demo
//------------------------------------------------------------------------------
// Author : Common
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.Reader;
import java.io.Writer;
//主类
//Function : 从文件中读取内容
public class InputStreamReader_demo {
public static void main(String[] args) throws Exception {
// TODO 自动生成的方法存根
File f = new File("/home/common/software/coding/HelloWord/HelloWord/test.txt");//路径
Reader reader = null;
reader = new InputStreamReader(new FileInputStream(f)); //字节流变成字符流
char c[] = new char[1024];
int len = reader.read(c);
reader.close();
System.out.println(new String(c,0,len));
}
}
转换流——OutputStreamWriter类与InputStreamReader类
原文：http://www.cnblogs.com/tonglin0325/p/5276976.html