Wednesday, November 19, 2014

Installing a JDK on windows without admin rights

Here at the office I do not have admin rights.
This is a pain because I cannot update the JDK to a version I'd like/have to use.
Well there is an option.

Download the desired JDK from the regular location.
Open the executable file using 7-zip or something similar. The executable contains only a single file named Unzip that file to a location where you want the JDK installed and you have write access to, for instance c:\development\jdk-8.20.
This will create the installation structure, although many of the jar file components are still compressed. These must be de compressed using a tool provided with the JDK itself, unpack200, that is found in jre\bin.
Locate all .pack files using dir *.pack /s/b and de-compress each of them using upack200:

c:\development\jdk-8.20\jre\bin\unpack200.exe -v -r path\file.pack path\file.jar.
The '-v' option provides for verbose output and the '-r' option removes the original pack file afterwards.

Tuesday, August 05, 2014

Mocking the InitialContext

Unit testing with JNDI

One of the issue's with unit tests is that it is not always easy to control the java.naming.InitialContext provided to the object under test.
Mock frameworks cannot create mocks for JRE classes like InitialContext, so how can we solve this challenge?

One solution could be to create a simple implementation for the javax.naming.spi.InitialContextFactory that returns a mock implementation provided by mockito. Through configuration, our implementation is then used.

public class InitialContextFactoryMock implements InitialContextFactory {

  private static Context mockContext;

    * The mockContext is created here to be able to use the {@link Context}
    * mock object while defining the expectations.
    * Remember to call this method each time a new test case is run.
    * @return a fresh {@link Context} mock.
  public static Context getMockContext() {
    mockContext = mock(Context.class);

    return mockContext;

    * This factory returns the {@link Context} mock created earlier.
  public Context getInitialContext(Hashtable environment) throws NamingException {
    return mockContext;

To use the InitialContextFactoryMock you need to specify it in the