Throw and Throws in Java
The throw keyword is used inside a function. It is used when it is required to throw an Exception logically. The throws keyword is used in the function signature. It is used...
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Checked and UnChecked Exceptions in Java
A checked exception is caught at compile time whereas a runtime or unchecked exception is, as it states, at runtime. A checked exception must be handled either by re-throwing or...
multiple and nested try catch in java
An exception occurred inside the outer try block. So, the control of execution passes to the outer catch block to handle exception without execution of the inner try catch...
Try and Catch Block in Java
A try block is the block of code (contains a set of statements) in which exceptions can occur; it's used to enclose the code that might throw an exception. The try block is...
Package Naming Convention In Java
Package names are written in all lower case to avoid conflict with the names of classes or interfaces. Companies use their reversed Internet domain name to begin their package...
Access Modifiers in Java
in Java, Access modifiers help to restrict the scope of a class, constructor, variable, method, or data member. It provides security, accessibility, etc to the user depending...
Creating a Package In Java
To create a package, you choose a name for the package (naming conventions are discussed in the next section) and put a package statement with that name at the top of every...
Packages In Java
A package is simply a container that groups related types (Java classes, interfaces, enumerations, and annotations). For example, in core Java, the ResultSet interface belongs...
Challenge Student Roll Number In Java
Challenge Student Roll Number In Java
Singelton Class In Java
In Java, Singleton is a design pattern that ensures that a class can only have one object. To create a singleton class, a class must implement the following properties: Create a...