Java Programming

Java programs are

• Faster than others

• Platform independent

• Not reusable

• Not sacable

Java has its origin in

• COBOL

• PERRL

• Oak programming language

• C language

Which one of the following is true for java

• Java is object oriented and interpreted

• Java is efficient and faster than C

• Java is the choice of everyone

• Java is not robust

The command javac is used to

• Execute a Java program

• Compile a Java program

• Debug a Java program

• Interpret a Java program

……………. are not machine instructions and therefore, Java interpreter generates machine code that can be directly executed by the machine that is running the Java program.

• Compiled instruction

• Compiled code

• Byte code

• Java mid code

Which of the following is not the Java primitive type

• Byte

• Float

• Character

• Long double

Which of the following is true about Java.

• Java does not support overloading.

• Java has replaced the destructor function of C++

• There are no header files in Java.

• All of the above

All Java classes are derived from

• java.lang.Class

• java.util.Name

• java.lang.Object

• java.awt.Window

Which of the following is not mandatory in a variable declaration?

• a semicolon

• an identifier

• an assignment

• a data type

What would happen if “String[]args” is not included as an argument in the main method?

• No error

• Compilation error

• The program won’t run

• Program exit