Java打印流学习

打印流

打印流的主要功能是用于输出,在整个IO包打印流分为两种类型,打印流可以很方便的进行输出。

1、字节打印流:PrintStream(在字节输出时,可以增强输出功能)

2、字符打印流:PrintWriter

import java.io.BufferedOutputStream;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.io.Writer;


public class PrintStreamDemo {

	// 字节打印流,向文件中写入数据
	private static void bytePrint() {
		File file = new File("F:/test.txt");
		try {
			OutputStream out = new FileOutputStream(file, true);
			// 加缓冲流
			BufferedOutputStream bos = new BufferedOutputStream(out);
			// 增强打印功能
			PrintStream ps = new PrintStream(bos);
			ps.println("字节打印流很方便。。。");

			System.out.println("写入完毕");
			ps.close();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		}
	}// bytePrint

	// 字符打印流,向文件中写入数据
	private static void charPrint() {
		File file = new File("F:/test.txt");
		try {
			Writer writer = new FileWriter(file, true);
			// 加缓冲流
			BufferedWriter bw = new BufferedWriter(writer);
			// 增强打印功能
			PrintWriter pw = new PrintWriter(bw);
			pw.println("字符打印流很方便。。。");

			System.out.println("写入完毕");
			pw.close();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}// charPrint

}
posted on 2019-05-16 12:34  行之间  阅读(262)  评论(0编辑  收藏  举报