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4 cards from this section. Quick, good the night before a test.
What is the purpose of a constructor in a class?
Think about what happens when an object is created.
What does the 'this' keyword do?
It helps differentiate instance variables from parameters.
What is the purpose of a constructor in a class?
Think about the role of object creation.
The 'this' keyword refers to:
It differentiates the object's attributes from method parameters.
Create a Java program with a class 'Student' that has a final variable 'ID', a static variable 'totalStudents', and appropriate constructors. Show how they interact through instantiation.
Remember to declare final fields in the constructor and to use static correctly.
Design a Java class called 'BankAccount' with methods to deposit and withdraw money. The method to withdraw should be static and the variable holding balance should be final. Explain why this design might be problematic.
Consider how final affects the balance variable.
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