char型输入输出流

package YiChangchuli;
import java.io.*;
public class TestFile3 {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        
        try {
            FileReader fr=new FileReader("e:\test.txt");
            char[] c=new char[200];
            int i=fr.read(c);
            String str=new String(c,0,i);
            System.out.println("读取内容="+str);
            //fr.close();
            
            //写入
            FileWriter fw=new FileWriter("e:\test.txt",true);
            fw.write("
新追加的内容");
            fw.close();
            
        
        
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

}