The 4.0 release is for early adopters that want to test backwards compatibility and migrate their plug-ins and RCP applications.

Link : http://www.eclipse.org/eclipse4/

Taken at some random beach on the ECR road.

Taken at Pondicherry Beach.

Taken at AuroVille Village, an Universal Town where people from more than 50 countries live there.

More pics of the tour are uploaded on Flickr

Also, congratulations to Sagar Gadde and  Govind Ashrit (ReadiMinds RockStar)  who completed 5 and 3 years with ReadiMinds this week.

Will post more on my experiences with ReadiMinds later. Soon

Thanks to All.

Singleton Class

package com.test.singleton;

public class Singleton {

	private static Singleton singleton  = null;

	private Singleton() {
		System.out.println("Running Constructor......");
	}

	public static Singleton getInstance(){
		if(singleton==null)
			singleton  = new Singleton();
		return singleton;
	}

}

Test Class

package com.test.singleton;

import java.lang.reflect.Constructor;
public class SingletonBroken {

	public static void main(String[] args) throws Exception  {
		Singleton instance1 = Singleton.getInstance();
		Class singletonClass = Singleton.class;

		Constructor constructor = singletonClass.getDeclaredConstructor();
		constructor.setAccessible(true);

		Singleton instance2 = (Singleton) constructor.newInstance();
	}

}

Output :

Running Constructor……
Running Constructor……

Now we know that our Singleton Class is no more a Singleton . One may need to handle this. This can be avoided by denying the ReflectPermission to the program, but this will fail many API’s (Spring, Hibernate .. ) which requires reflection to work. Another way of avoiding this is to handle ourselves in the constructor so that the constructor throws exception if an instance already exists.

Modified Singleton Class – Throws Exception

package com.test.singleton.exception;

public class Singleton {
private static Singleton singleton  = null;

	private Singleton() throws Exception {
		if(singleton!=null)
			throw new IllegalAccessException("Instance Already Exists !");
		System.out.println("Running Constructor......");
	}

	public static Singleton getInstance() throws Exception{
		if(singleton==null)
			singleton  = new Singleton();
		return singleton;
	}
}

Output :

Running Constructor......
Exception in thread "main" java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
	at com.test.singleton.exception.SingletonTest.main(SingletonTest.java:16)
Caused by: java.lang.IllegalAccessException: Instance Already Exists !
	at com.test.singleton.exception.Singleton.(Singleton.java:8)
	... 5 more

Now our application throws error if the constructor is invoked more than once.
Objenesis will even bypass the constructor code. so all the above things will not work.

Link to the Original Post : http://www.ted.com/talks/hans_rosling_asia_s_rise_how_and_when.html

Hive: HKEY_CURRENT_USER
Key: Software\Microsoft\Windows\CurrentVersion\Policies\System
Name: DisableTaskMgr
Type: REG_DWORD
Value: 1=Enable this key, that is DISABLE TaskManager
Value: 0=Disable this key, that is Don’t Disable, Enable TaskManager.

If you are an Administrator you can consider  using Group Policy Editor. For that,

• Click Start
• Click Run
• Enter gpedit.msc in the Open box and click OK
• In the Group Policy settings window
  • Select User Configuration
  • Select Administrative Templates
  • Select System
  • Select Ctrl+Alt+Delete options
  • Select Remove Task Manager
  • Double-click the Remove Task Manager option

Since the policy is Remove Task Manager, by disabling the policy, you are enabling the Task Manager.

FYI: You can run registry editor with command regedit.

Enjoy !!

Goto START>RUN>type REGEDIT

Then goto HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor

On right hand side double click on processorNameString and write what ever you want.

Now check for the modified information in Computer Properties.

You can see how intelligent is the Mechatronics Engineer in committing suicide(Of course i am !).

Cheers !!