JP S1

Where does an object of a class get stored?

• Stack area

• Method area

• In the file

• In the database

• Heap area

Which of the following statements is NOT true of the Java programming language?

• All source code is written in plain text files with the extension .java.

• Java source code files are compiled into .class files by the javac command.

• The javac command can be used to run a Java application.

• A .class file contains platform independent bytecode.

Which of the following statements is NOT TRUE about the JVM?

• The JVM is a virtual Machine that acts as an intermediary layer between the Java Application and the Native Operating System.

• The JVM reads byte code from the class file, and generates machine code.

• The JVM does not understand the Java language specification.

• The JVM reads Java source code, and then translates it into byte code.

One of the primary goals of the Java platform is to provide an interpreted, just-in-time run time environment.

• True

• False

Given the java snippet below:

Which of the following statements is TRUE?

• Compile error, as the variable x is not initialized.

• Variable x resides in the stack area, and variable y resides in the heap of the JVM.

• Variable x resides in the heap area, and variable y resides in the stack of the JVM

• Variable x stays in the heap area, and variable y resides in the method area of the JVM.

Java allows the same Java program to be executed on multiple operating systems.

• True

• False

Which of the following statements describe Java technology?

• It is a programming language.

• It is a development environment.

• It is a deployment environment.

• All of these

During runtime, the Java platform loads classes dynamically as required.

• True

• False

Given the following code snippet:

String str = new String("Hello");

The str variable will be located in which memory area in the JVM during runtime?

• str will stay in the heap area of the run-time data area in the JVM.

• str will stay in the method area of the run-time data area in the JVM.

• str will stay in the stack area of the run-time data area in the JVM.

• str will stay in the heap area of the constant pool run-time data area in the JVM.

Given the following code snippet:

String str = new String("Hello");

The "Hello" String literal will be located in which memory area in the JVM during runtime?

• In the Heap area of the run-time data area in the JVM.

• In the Method area of the run-time data area in the JVM.

• In the Stack area of the run-time data area in the JVM.

• In the constant pool area of the run-time data area in the JVM.