The BH Package

The Source The .jar The API
//A Test Servlet


import java.util.Arrays;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import static  BH.Bytes_Hex.*;
import student_types.*;


public class Bytes_HexServlet extends HttpServlet {


    public void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException
    {
        String test="Hello_World Mr. O'Mally& Mr. Brown-Smith";
        String hextest=String2HexString(test);
        response.setContentType("text/html");
        PrintWriter out = response.getWriter(); 
        out.println("<html><body><b><font size='+1'><pre> ");
        out.println("--The Test String: \n"+test);
        byte[] theBytes = String2ByteArray(test);
        out.println("--As a byte Array:\n "+Arrays.toString(theBytes));
        String hexstring=ByteArray2HexString(theBytes);
        out.println("--As a Hex String:\n "+hexstring);
        char[] theHexes= hexstring.toCharArray();
        out.println("--As a Hex Array:\n "+Arrays.toString(theHexes));
        out.println("--Back to the String:\n "+ ByteArray2String(HexArray2ByteArray(theHexes)));
        out.println("\nIn One Step");
        String ashex=String2HexString(test);
        out.println("--String to Hex String:\n "+ashex);
        out.println("--Hex String to String:\n "+HexString2String(ashex));
        out.println("\n--Objects:");
        student jones=new student("jones","senior",90);
        byte[] baj=Object2ByteArray(jones);     
        out.println("Object to HexString: \n"+ByteArray2HexString(baj));  
        Object the_object=ByteArrayToObject(baj); //The same code but not from the .jar  
        out.println("<font color='BLUE'>\nI am using a local version of ByteArray2Object\nByteArray2Object has issues in Tomcat lib\n"+
                    "'seeing' project classes.</font>\n ");                    
        student jones1=(student)the_object;
        out.println("--Back to student and get name:");
        out.println(jones1.name);
        out.println("</pre></font></b></body></html> "); 
        out.flush();
        out.close(); 
    }
    public  Object ByteArrayToObject(byte[] b){
        try {

            ByteArrayInputStream bi = new ByteArrayInputStream(b);
            ObjectInputStream oin=null;
            try {
                oin=new ObjectInputStream(bi);
            } catch (Exception e) {
                e.printStackTrace();
            }
            return oin.readObject();     

        } catch (Exception e) {
            e.printStackTrace();
        }
        return new String("No Object");
    }



}
 



http://hoare.cs.umsl.edu/servlet/j-siegel/Bytes_HexServlet

 

As of now, Bytes_Hex.jar on hoare.cs.umsl.edu.
 

 


The .class file was compiled on my home system and moved up to the webapp. In order
to compile on hoare.cs.umsl.edu I will have to make the .jar visible to the source file. Perhaps
create a personal library directory and add it to my CLASSPATH, maybe just add the webapp library directory?