binfileoutput.java

《Java核心技术应用开发》电子工业出版社书籍源代码

package sample;

import java.io.*;

public class BinFileOutput {
  public static void main(String f[]) {

    if(f.length <1){
			System.out.println("usage: BinFileOutput filename");
	                return;

		}
    FileOutputStream fos;
    DataOutputStream ds;
    try {
      fos = new FileOutputStream(f[0]);

      // Wrap the FileOutputStream with a
      // DataOutputStream to obtain its writeInt()
      // method.
      ds = new DataOutputStream( fos );

      int a[] = {0,1,2,3,4,5,6,7,8,9};

      for (int i=0; i<a.length; i++) {
              ds.writeInt(a[i]);
              //ds.writeChar(a[i]);
      }

    } catch (IOException ioe) {
               System.out.println( "IO error: " + ioe ); }
    }
}