YES StringBuffer and StringBuilder classes not overriding equals()method and haschcode() method. Before discussing about why these classes are not overriding equas() and hashcde() methods lets see the usage... read more ?

1.Can we define a class without main method? No, you can’t run java class without main method.  Before Java 7, you can run java class by using static... read more ?

Its recommended to learn about life cycle of Thread before you start programming on Thread. Threads exists in different type of states. (adsbygoogle = window.adsbygoogle || []).push({}); Thread... read more ?

throw keyword: throw keyword used to throw user defined exceptions.(we can throw predefined exception too) If we are having our own validations in our code we can use... read more ?

Apart from java we have Existing Exceptions. and we can also create our own Exceptions nothing but User defined Exceptions. User defined exceptions in java are also known... read more ?

try block: The functionality of try keyword is to identify an exception object. And catch that exception object and transfer the control along with the identified exception object... read more ?

In  java we can create user defined threads in two ways  Implementing Runnable interface extending Thread class. (adsbygoogle = window.adsbygoogle || []).push({}); These are the two different ways... read more ?