Java-Java I/O流解读之java.io.PrintStream & java.io.PrintWriter

package com.xgj.master.java.io.fileDemo.characterStreams;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.PrintStream;

import org.junit.Test;

/**
 * 
 * 
 * @ClassName: PrintStreamDemo
 * 
 * @Description: PrintStream is subclass of OutputStream that adds extra
 *               functionality to print different type of data.
 * 
 *               PrintStream never throws IOException.
 * 
 *               PrintStream is automatically flushed when a byte array is
 *               written.
 * 
 * @author: Mr.Yang
 * 
 * @date: 2017年9月7日 下午2:21:01
 */
public class PrintStreamDemo {

    @Test
    public void test() {
        // Write data on console using PrintStream
        PrintStream pConsol = new PrintStream(System.out);
        try {
            pConsol.write("Data to Write on Console using PrintStream".getBytes());
        } catch (IOException e) {
            e.printStackTrace();
        }
        // flush stream
        pConsol.flush();
        // close stream
        pConsol.close();

        // Write data in file using PrintStream
        PrintStream pFile = null;
        try {
            pFile = new PrintStream("D:\\xgj.txt");
            pFile.write("Data to Write in File using PrintStream".getBytes());
            pFile.flush();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            // close stream
            if (pFile != null) {
                pFile.close();
            }
        }
    }
}

package com.xgj.master.java.io.fileDemo.characterStreams;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;

import org.junit.Test;

/**
 * 
 * 
 * @ClassName: PrintWriterDemo
 * 
 * @Description: PrintWriter is the implementation of Writer class.
 * 
 *               PrintWriter is used to print formatted representation to
 *               text-output-stream.
 * 
 * 
 *               PrintWriter can also be enabled for automatic flush whenever a
 *               newline character is written.
 * 
 * @author: Mr.Yang
 * 
 * @date: 2017年9月7日 下午2:27:13
 */
public class PrintWriterDemo {

    @Test
    public void test() {
        // Write data on console using PrintWriter
        PrintWriter pwConsole = new PrintWriter(System.out);
        pwConsole.write("Data to Write on Console using PrintWriter");
        pwConsole.flush();
        pwConsole.close();

        // Write data in file using PrintWriter
        PrintWriter pwFile = null;
        try {
            pwFile = new PrintWriter(new File("D:/text.txt"));
            pwFile.write("Data to Write in File using PrintWriter");
            pwFile.flush();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } finally {
            pwFile.close();
        }
    }
}