Java

Are you trying to run a Java based application or program and getting an error - "The system cannot find the file C:\ProgramData\Oracle\Java\javapath\java.exe"? It looks like the symlinks are not properly created when you've installed Java. When you install Java, it creates symlinks for java.exe, javaw.exe and javaws.exe under "C:\ProgramData\Oracle\Java\javapath\". If … [Read more...] about How to Fix – The system cannot find the file C:\ProgramData\Oracle\Java\javapath\java.exe

In this post, we will discuss the difference between constructor overloading and method overloading in Java. Constructor Overloading Writing more than 1 constructor in a class with a unique set of arguments is called as Constructor OverloadingAll constructors will have the name of the classOverloaded constructor will be executed at the time of instantiating an objectAn … [Read more...] about Difference Between Constructor Overloading and Method Overloading in Java

Constructor calling in Java is possible in multiple ways. In this post, we'll discuss each of those methods in detail. One thing we should remember is that constructor calling is only possible during the object creation. Once the object is created you won't be able to call the constructor. You can call a constructor in Java 3 different ways: Calling a constructor at the … [Read more...] about Constructor Calling in Java

In Java, particularly when you are working with String class, you may have a situation where a String object either has a null or empty string. Java treats null and empty as two different values. They both are not equal. In Java, if a reference variable has its value as null, it means that it is not referring to any object. A good example of that kind of reference variable … [Read more...] about Difference Between null and isEmpty in Java

If you want to print a welcome message before the main method is executed in Java, a static block is the best place to do that. What is a static block? A static block is nothing but a code block just like instance block. The static block does not depend on any object. What that means is, even though you make mulitple instances of a class, the static block will be executed only … [Read more...] about How to Print Welcome Message Before Main Method is Executed in Java