Packages are similar to folders, which are mainly used to organize classes and interfaces.

Packages help us to write better and manageable code by preventing naming conflicts. Java provides some built-in packages which we can use but we can also create our own (user-defined) packages.

package is a collection of

Hello,

You cannot restrict inheritance in Java. But to prevent inheritance, use the keyword "final" when creating the class. The designers of the String class realized that it was not a candidate for inheritance and have prevented it from being extended.

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Multiple Inheritance is a feature of an object-oriented concept, where a class can inherit properties of more than one parent class. The problem occurs when there exist methods with the same signature in both the superclasses and subclass. On calling the method, the compiler cannot determine which class method to

Void is a keyword and used to specify that a method doesn’t return anything. As method doesn’t return anything, its return type is void . As soon as the  method terminates, the java program terminates too. Hence, it doesn’t make any sense to return from method as JVM can’t do

Static is a keywordwhich is when associated with a method, makes it a class related method. The method is static so that JVM can invoke it without instantiating the class. This also saves the unnecessary wastage of memory which would have been used by the object declared only for calling

Hello,

Because Java compiles as bytecode which then runs inside a Virtual machine, it cannot access the computer it runs on like a natively compiled program can. The general reason why Java is considered to be more secure than, say C, is because it handles memory management for you.

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Suppose you have to perform addition of the given numbers but there can be any number of arguments, if you write the method such as a(int,int) for two parameters, and b(int,int,int) for three parameters then it may be difficult for you as well as other programmers to understand the behavior

If a subclass provides the specific implementation of the method that has been declared by one of its parent class, it is known as method overriding.

The final keyword can be applied with the variables, a final variable that have no value it is called blank final variable or uninitialized final variable. It can be initialized in the constructor only. The blank final variable can be static also which will be initialized in the static block

The final keyword can be applied with the variables, a final variable that have no value it is called blank final variable or uninitialized final variable. It can be initialized in the constructor only. The blank final variable can be static also which will be initialized in the static block