JavaA collection of 25 posts

Java Tasks

How to break Singleton class in java

Overall notion of Singleton class lies in getting one and only one instance of the class. Much…

Java Collection Problems

How to sort list of objects in java

Sort list of objects on a field Suppose you have a list which contains objects of your…

Java String

How to iterate over a list in various ways in java / Different methods of list iteration in java

Iterating over a collection is a task that most developers are required to perform during their development…

Java String

Various ways to determine if an entire string is a number in java / How to check if String does not contain number in java

There may be a scenario, if we want to determine whether a string is completely numeric or…

Java String

How to check the presence of a string in between specified strings in a file in java

Suppose, there is a requirement to check that a particular string is present in a file but…

Java Concurrency

How to do a task repeatedly using threads in java / How to create a timer using ScheduledThreadPoolExecutor in java

Suppose we want to do a task after fixed time interval such as creating a beep sound…

Java Tasks

How to load same class more than once in jvm / How to dynamically reload a class

Loading a class more than once using java’s built in ClassLoader is not possible because: Builtin ClassLoader…