[Java] 字符流 Writer，输出字符数据PrintWriter

package test.stream;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;

/**
 * 字符流 Writer
 * @author Frost.Yen
 * @E-mail [e-mail]
 * @date 2016年4月13日
 */
public class TestWriter {
    public static void main(String[] args) {
        BufferedReader br = null;
        PrintWriter out = null;
        try {
            //字符流用来读取字符数据，对于输入字符流而言，最为常用的操作方法是使用BufferedReader，因为该流有个readLine()
            br = new BufferedReader(new FileReader("E:\\JAVA\\Examples\\To Learn\\src\\test\\stream\\test.txt"));
            out = new PrintWriter(new BufferedWriter(new FileWriter("E:\\JAVA\\Examples\\To Learn\\src\\test\\stream\\tt.txt")));
            //BufferedWriter bw = new BufferedWriter(new FileWriter("E:\\JAVA\\Examples\\To Learn\\src\\test\\stream\\tt.txt"));
             String str = null;
            while((str = br.readLine())!=null){
                System.out.println(str);
                //使用bw输出不会换行，得调用newLine()换行
                //bw.write(str+"\n");
                //bw.newLine();

                out.println(str);
            }
            //bw.flush();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            try {
                if(br!=null) br.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            if(out!=null) out.close();
        }

    }
}