It is similar to if else. In this code the if the value is equal to 1 than the condition is satisfied and 20 will be output else 30.

These three file pointers are automatically defined when a program executes and provide access to the keyboard and screen.

It provides operators such as &&, || etc........

Both the system defined functions are used for single character input and output respectively.

In 1978 oracle version 1 in assembly language as RDBMS launched.

An interface in the Java programming language is an abstract type that is used to specify an interface (in the generic sense of the term) that classes must implement.

Java is derived from Oak programming language.

Java is platform independet and that runs on multiple platforms with little or no modification of code.

Java is objected-oriented and interpreted programing language that is the strong feature of java.

It is not a java primitive.

Object Oriented Programing increases productivity by giving reusability of the codes. It means that the code generated once can be used multiple times appliying  Object Oriented Programing concepts.

The java.lang.Object class is the root of the class hierarchy. Every class has Object as a superclass. All objects, including arrays, implement the methods of this class.

The Java programming language allows one to define a class within another class. Such an inner class is called a nested class.

DBMS keeps the track of old password for specified duration of time as mentioned in the policy, and it does not allow the user to reset the same password for that duration.

SYSDBA is the actual privilege required or given to DBA to create a new database.

4.3 E -24 = 4.3 X 10^-24. It is the correct answer.

Scope resolution operator overloading is not possible.

The language belongs between high and low level, i.e. C.

Standard Template Library (STL) is a C++ software library. It is the corect expansion of the term.

Scope resolution operator. It is used to call a global variable if local and global variables are declared with same name. In general call to variable in functions priority goes to local variable. Hence, to call global specifically, this operator is used.