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 }
05-11 18:07