java 二进制的读法

package com.syp.stream;

import java.io.DataInputStream; 
import java.io.DataOutputStream; 
import java.io.File; 
import java.io.FileInputStream; 
import java.io.FileOutputStream; 
import java.io.IOException; 
 
/* @comany 阿斯达克(深圳)信息技术有限公司
* @author steven.wu
* @since 2009.8.11
* @description read and write stream for binary file。
*/ 
public class BinaryReadWrite { 
    private DataInputStream dis=null; 
    private DataOutputStream dos=null; 
    private String s_FilePath="d:/bin.dat"; 
    private byte[] m_datapadding = { 0x00 }; //填充空白，以补足字节位数. 
     
    public BinaryReadWrite() { 
        // TODO Auto-generated constructor stub 
        init(); 
    } 
    private void init(){ 
        try{ 
            if(!new File(s_FilePath).exists()){ 
                new File(s_FilePath).createNewFile(); 
            } 
            dis=new DataInputStream(new FileInputStream(new File(s_FilePath))); 
            dos=new DataOutputStream(new FileOutputStream(new File(s_FilePath))); 
        }catch(Exception e){ 
            e.printStackTrace(); 
        } 
    } 
    public void writeBinaryStream(){ 
        try{ 
            if(dos!=null){ 
                for(int i=0;i<2;i++){ 
                    //write boolean value. 
                    dos.writeBoolean(true); 
                    //write a char value. 
                    char c='a'; 
                    dos.writeChar((int)c); 
                    Double d=12.567d; 
                    dos.writeDouble(d); 
                    Float f=56.782f; 
                    dos.writeFloat(f); 
                    int k=105; 
                    dos.writeInt(k); 
                    long l=98765l; 
                    dos.writeLong(l); 
                    short st=12; 
                    dos.writeShort(st); 
                    String cs="Java读写二进制文件"; 
                    String cs1="二进制文件"; 
                    if(i==0){ 
                        dos.writeUTF(cs); 
                    }else{ 
                        dos.writeUTF(cs1); 
                    } 
                    dos.write(m_datapadding); 
                } 
                dos.flush(); 
                dos.close(); 
            } 
        }catch(Exception e){ 
            e.printStackTrace(); 
        } 
    } 
    public void readBinaryStream(){ 
        try{ 
            if(dis!=null){ 
                while(dis.available()>0){ 
                    System.out.println(dis.available()); 
                    System.out.println(dis.readBoolean()); 
                    char c=(char)dis.readChar(); 
                    System.out.println(c); 
                    System.out.println(dis.readDouble()); 
                    System.out.println(dis.readFloat()); 
                    System.out.println(dis.readInt()); 
                    System.out.println(dis.readLong()); 
                    System.out.println(dis.readShort()); 
                    System.out.println(dis.readUTF());
               
                    System.out.println(dis.read(m_datapadding)); 
                } 
            } 
        }catch(Exception e){ 
            e.printStackTrace(); 
        } 
    } 
    public static void main(String[] args) throws IOException { 
        BinaryReadWrite bin=new BinaryReadWrite(); 
        bin.writeBinaryStream(); 
        bin.readBinaryStream(); 
    } 
}