1. What is bytecode and why is it important to Java’s use for Internet programming?
Bytecode is a highly optimized set of instructions that is executed by the Java Virtual Machine. Bytecode helps Java achieve both portability and security.
2. What are the three main principles of object-oriented programming?
Encapsulation, polymorphism, and inheritance.
3. Where do Java programs begin execution?
Java programs begin execution at main( ).
4. What is a variable?
A variable is a named memory location. The contents of a variable can be changed during the execution of a program.
5. Which of the following variable names is invalid?
The invalid variable is D. Variable names cannot begin with a digit.
6. How do you create ...