Basics of JAVA

How many primitive data types in java are?

• 6
• 7
• 8
• 9

What is the size (in bits) of float and double in java?

• 32 and 64

• 32 and 32

• 64 and 64

• 64 and 32

Arrays in java are

• Object reference
• objects
• Primitive data type
• None

Identify the keyword among the following that makes a variable belong to a class,rather than being defined for each instance of the class.

• final
• static
• volatile
• abstract

Where does the system stores parameters and local variables whenever a method is invoked?

• Heap
• Array
• Stack
• Tree

Where is the System class defined

• java.lang
• java.util
• java.io
• None

Which of the following is used to compile, debug and execute the programs?

• JIT
• JDK
• JRE
• JVM

What is the extension for java executable code

• .java
• .class
• .exe
• .obj

Which of the following option leads to the portability and security of Java?

• Bytecode is executed by JVM

• The applet makes the Java code secure and portable

• Use of exception handling

• Dynamic binding between objects

Which of the following is not a Java features?

• Dynamic

• Architecture Neutral

• Use of pointers

• Object-oriented