FileWriter和FileReader简单使用

FileWriter和FileReader使用

package com.main.test;

import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

public class FileWriterTest {
	static FileWriter fw;
	static FileReader fr;
	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
             //  fileWriter();
		//FileReaderDemo();
		//whileFileReader();
		//whileFileReader2();
        //   shuZuReadDemo();
	}
	private static void shuZuReadDemo() throws FileNotFoundException,
			IOException {
		fr = new FileReader("c:\\田藩.txt");
           char[] ch = new char[3];
           fr.read(ch);
           for(int i= 0 ;i<ch.length;i++){
        	   System.out.println(ch[i]+"");
           }
	}
	private static void whileFileReader2() throws FileNotFoundException,
			IOException {
		fr = new FileReader("c:\\田藩.txt");
	    int ch =0;
	    while((ch=fr.read())!=-1){
	    	System.out.println((char)ch);
	    }
	}
	private static void whileFileReader() throws FileNotFoundException,
			IOException {
		fr = new FileReader("c:\\田藩.txt");
		while(true){
			int ch = fr.read();
			if(ch == -1){
				break;
			}
			System.out.println((char)ch);
		}
		fr.close();
	}
	private static void FileReaderDemo() throws FileNotFoundException,
			IOException {
		fr = new FileReader("c:\\田藩.txt");
	    int ch =fr.read();
	    int ch2 =fr.read();
	    System.out.println((char)ch);
	    System.out.println((char)ch2);
	}
	private static void fileWriter() throws IOException {
		try {
			 fw = new FileWriter("c:\\田藩.txt",true);
			fw.write("#eoeoeo");

		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally{
			fw.close();
		}
	}

}