Important Web Design and Development Short Questions

Chapter: 1
Question 1:
Why is Java expected to remain relevant for the next 10-20 years?
Answer: Java's robustness, portability, and suitability for modern problems contribute to its expected longevity.
Chapter: 2
Question 2:
What does WORA stand for in Java programming?
Answer: WORA stands for "Write Once, Run Anywhere," meaning Java code can run on any platform that has a compatible JVM.
Chapter: 2
Question 3:
What is the role of the JVM in Java?
Answer: The JVM (Java Virtual Machine) interprets Java bytecode into machine code that can be executed by the underlying system, making Java programs portable across different platforms.
Chapter: 2
Question 4:
What is bytecode in Java?
Answer: Bytecode is the intermediate representation of Java source code, compiled by the Java compiler, that can be executed on any system with a compatible JVM.
Chapter: 2
Question 5:
What is the difference between Java bytecode and machine code?
Answer: Java bytecode is a platform-independent intermediate form that runs on the JVM, while machine code is platform-specific and directly executed by the CPU.
Chapter: 2
Question 6:
What are the five phases of Java program development and execution?
Answer: The five phases are Edit, Compile, Load, Verify, and Execute, which represent the lifecycle of a Java program from writing the source code to running it on a system.
Chapter: 2
Question 7:
What does the Java compiler do?
Answer: The Java compiler converts Java source code into bytecode, which is stored in .class files and can be executed by the JVM.
Chapter: 2
Question 8:
How does the class loader contribute to Java program execution?
Answer: The class loader loads the compiled bytecode into memory, making it available for execution by the JVM.
Chapter: 2
Question 9:
What is the purpose of the bytecode verifier?
Answer: The bytecode verifier checks the validity and security of bytecode before it is executed by the JVM, ensuring it adheres to Java's security restrictions.
Chapter: 2
Question 10:
How does Java ensure platform independence?
Answer: Java ensures platform independence by compiling code into bytecode, which can be executed on any platform with a compatible JVM, without needing recompilation.