How to load the same class from different cans

Question

I have a Client.java class in two different banks jar1 and jar2. Now, at runtime, I want to decide which Client.class is loaded as

if (country==india){
         // load Client class of jar1
) else{
        load client class from jar2 
}

Can i do this ...

Answer 1

If 2 classes have the same package name, that is com.mycompany.Client, then you are in a situation where it is somewhat arbitrary, which version of the client is loading. This boils down to what primarily refers to the class. This is a hellish JAR situation http://en.wikipedia.org/wiki/Java_Classloader#JAR_hell .

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, @Casidiablo .

Answer 2

"" . :

if (country==india){
         name.first.package.Client client = new name.first.package.Client();
} else{
         name.second.package.Client client = new name.second.package.Client();
}

... ... .

Answer 3

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Answer 4

, 2 :

1) , : IndiaClient Country2Client;

    interface Client {...}
    class IndiaClient implements Client {...}
    class Country2Client implements Client {...}

    Client client;
    if (country==india){
        client = new IndiaClient();
    ) else{
        client = new Country2Client();
    }

2) jar, - ClassLoaders :

    interface IClient {...}
    class Client implements IClient {...} // in jar1
    class Client implements IClient {...} // in jar2

    Class<IClient> clientClass;
    if (country==india){
        clientClass = classLoader1.loadClass ("package.Client");
    ) else {
        clientClass = classLoader2.loadClass ("package.Client");
    }
    IClient client = clientClass.newInstance ();

• How to get the Loaders class, you can refer to the JDK docs.