java IO(输入输出) 字节流

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//输入流package zhi_jie_liu;import java.io.*;public class Example01 {public static void main(String[] args) throws Exception {// TODO Auto-generated method stubFileInputStream inputStream=new FileInputStream("yangyuhang.txt");int b=0;while(true){b=inputStream.read();if (b==-1) {break;}System.out.println(b);}           inputStream.close();}}//输出流package zhi_jie_liu;import java.io.*;public class Example02 {public static void main(String[] args) throws Exception {// TODO Auto-generated method stubFileOutputStream out=new FileOutputStream("02.txt");String str="小明";byte[] b=str.getBytes();for (int i = 0; i < b.length; i++) {out.write(b[i]);}out.close();}}//追加写入package zhi_jie_liu;import java.io.*;public class Example03 {public static void main(String[] args) throws Exception {// TODO Auto-generated method stubOutputStream out=new FileOutputStream("E:/java/javaMy/yangyuhang.txt",true);        String str="是个好学生";        byte[] b=str.getBytes();        for (int i = 0; i < b.length; i++) {out.write(b[i]);}        out.close();}}

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