零基础学java

1.数据输出流：package com.file;import java.io.BufferedOutputStream;import java.io.DataOutputStream;import java.io.FileOutputStream;public class DataOutputDemo { public static void main(String[] args) throws Exception{ DataOutputStream dos=n

1.字节数组输入流package com.file;//字节数组输出流import java.io.ByteArrayInputStream;public class ByteArrayInputDemo { public static void main(String[] args) throws Exception{ byte[] arr="abchgsdjah".getBytes(); ByteArrayInputStream bi=new Byt

package com.file;import java.io.*;public class LineNumberDemo3 { public static void main(String[] args) throws IOException { BufferedReader br=new BufferedReader (new InputStreamReader(new FileInputStream("d:/zuoye.txt")));.