return "This is String Representation of current object."; } I have overridden the toString() method and used @Override annotation in above code. Even if I don’t put @Override, code works properly without any issue. So what’s the advantage and what does this annotation stand for? @Over...
How does the "final" keyword in Java work? (I can still modify an object.)In Java, the final keyword can be used in several contexts to declare that something cannot be changed. When applied to a variable, it means that the value of the variable cannot be changed once it has...
Authentication in Java provides security, safety, and privacy of the data and authority. The authentication uses for accessing part of the database to respective users and authorities. It becomes easy, attractive, user-friendly, and elegant websites and web applications. This function sorts the doc...
I'd like to generate this map using a query on a H2 database (the data is already in the DB). However, it seems that I'm using an unsupported feature (is it the '+' operator?): How can I rewrite the query, so that it runs on H2 (but possibly with wide compatibility)? EDIT...
Exception handing , how does it work in this case I have a Class A with Object of type Class B returning an Object , In what case will I get a null ? If there is an exception in test , in which I use an external api and an exception is thrown shouldn't the control go to the...
How does garbage collection work in Java? During the garbage collection process, the collector scans different parts of the heap, looking for objects that are no longer in use. If an object no longer has any references to it from elsewhere in the application, the collector removes the object...
How does Final Class work in Java? When declaring a class with the final keyword, It enablesJVM to make assumptions& optimization. Once you add the final keyword to any class in Java, the reference for that class cannot be changed. The compiler will check if any referencing is retaking pl...
The visibility of the method does not matter.@AerospikeKey public String getKey() { return this.keyPart1 + ":" + this.keyPart2; }Note that it is not required to have a key on an object annotated with @AerospikeRecord. This is because an object can be embedded in another object (as...
If jstack doesn't work, it's possible to start IDE from the console/terminal and take a dump using platform specific ways. Windows Use the.batfile named for the product and located inIDE_HOME\bindirectory (idea.bat, phpstorm.bat, webstorm.bat, pycharm.bat, rubymine...
that if you are using Maven then the pomisthe project definition. Intellij IDEA users to some extend too as IDEA has this idea that a Maven project needs to be "imported" and it does a fair amount of duplicating stuff into files in .idea folder which can already be...