Implementing n-tier Architecture using java

Hi !!
I wish to know how I can proceed to implement n-tier application using java
or how to implement n-tier application with JBuilder.
Thanks!

Easypublic class nTier {
public static void main(String[] args) {
    int n =5;
    for (int i=0; i<n; i++) {
      System.out.println(i + " tier");
}Ted.

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Thanks a lot for showing ur interest to read this

You need Oracle Application Server to deploy the forms when you go live.
What you are currently using OC4J which came in the developer suite. It is used only for development purpose and can not have capacity to handle higher load.
3 tier arch
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3 Database Tier -> Oracle Database
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Hello Meghal,
It is possible to implement social login via Facebook for SAP Enterprise Portal 7.3 by simply using the SAP Cloud Identity offering.
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Soph wrote:
I have a shared Object called "tradeObj" whose attributes are "Price" and "Quantity".
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Satish Shenoy (guest) wrote:
: I wanted to know about three tier architecture.
: I asked many people but couldn't get a proper answer.
: Can anoyone give me some information about it.
: Thanks in advance,
: Satish
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null

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Here are my Version specs,
I am using Jdeveloper 10.1.3.4.0 and deploying onto OAS 10.1.3.
I will be creating a J2ee 1.4 (JAX-RPC) Web Service using Document/Wrapped style.
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XML response from the web service must conform to the element, attribute definitions in the provided XML schema.
From a Java implementation approach, what is the best (simplest or quickest) way to retrieve data from the Oracle
tables and map each fields/column to the required XML output (defined in the XML schema).
I'm not too concerned with using Java to retrieve data from the Database, more with how I can map the data returned
to the required output. Can this mapping task be controlled within the Java program?
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Have one big file mapped to memory. I write the serialized objects to different portions of the file and then read those portions when needed. I can use the MappedByteBufferThis is a good idea, one that I have worked on. It involves quite a bit of manipulation with temporary buffers and a deep working knowledge of object serialization.
1. How do I delete things from the cache in the above design i.e. how do I delete portions of a mapped file?The best way to handle this is do a two-step process, cutting the file into two pieces and gluing it back together where the original one is...
2. How do I serialize objects using ByteBuffers and then deserialize them? I guess this shouldn't be hard but just want to confirm.It is hard. Wrapping the streams and making the IO work properly is not the challenge however. The hard part comes in hacking the object streams. The object input/output streams use a ClassDescriptor object which only gets written once/ read once. This shouldn't be a problem if you will read/write the entire file at once, but will bring you grief if you want random access to your objects. You will also need an indexing mechanism to support random access.
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You can always write all your objects into the same file using normal io techniques and you can still generate an index and acheive random access. It might be easier...
Good luck

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Implementing n-tier Architecture using java

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