The static keyword can be used with class, variable, method and block. Static members belong to the class instead of a specific instance, this means if you make a member static, you can access it without an object. Static Block A static block is used for initializing the static variables. Read more…
Memory Leak The standard definition of a memory leak is a scenario that occurs when objects are no longer being used by the application, but the Garbage Collector is unable to remove them from working memory – because they’re still being referenced. As a result, the application consumes more and Read more…
Java Garbage Collection is the process to identify and remove the unused objects from the memory and free space to be allocated to objects created in the future processing. One of the best feature of java programming language is the automatic garbage collection, Garbage Collector is the program running in Read more…
Based on my previous post related to Java Memory Allocation – Heap and Stack let’s see the difference. Heap Space Stack Memory Heap memory is used by all the parts of the application. Stack memory is used only by one thread of execution. Whenever an object is created, it’s always stored in Read more…
When a Java program starts Java Virtual Machine gets some memory from the Operating System. Java Virtual Machine or JVM uses this memory for all its needs. This memory is basically divided into two-part Java Heap Space Java Stack Memory Java Heap Space Java Heap space is used by java Read more…
Java (JVM) Memory Model At broad level, JVM Heap memory is physically divided into two parts – Young Generation and Old Generation. Young Generation Young generation is the place where all the new objects are created. When young generation is filled, garbage collection is performed. This garbage collection is called Read more…
One of the biggest confusion in Java programming language is whether java is Pass by Value or Pass by Reference. First of all, we should understand what is meant by pass by value or pass by reference. Pass by Value: The method parameter values are copied to another variable and Read more…
There are many ways to reverse a String in Java. We will see traditional ways and using classes that provide an in-build function. 1. Storing in reverse Order In the above piece of code. We have assigned a char of length of String passed to it. In the loop we are Read more…
Based on my previous posts related to StringBuffer and StringBuilder let’s see the difference. StringBuffer StringBuilder StringBuffer was the only choice for String manipulation till Java 1.4 StringBuilder came into picture from Java 1.5. all of its public methods are synchronized all of its public methods are not synchronized StringBuffer provides Thread safety. StringBuilder Read more…
We will find an answer for the following questions What is StringBuffer Available Constructors Commonly used methods StringBuffer Java StringBuffer class is used to create a mutable (modifiable) string. The StringBuffer class in java is the same as the String class except it is mutable i.e. it can be changed. The Read more…