Java读写二进制文件，java读写二进制,import java.

Java读写二进制文件，java读写二进制,import java.

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();      }  }