State true or false to implement an interface, a concrete class must implement at least one method headings listed in the definition of the interface ?

Why is a destructor required for a class to implement?

True or False 1) After a user defines his/her own constructor in a Java class, the default constructor is still available. ​___(2) Java supports multiple inheritances directly. ​___(3) Some methods in an interface can have method body.

Given: interface B void methodA(); class C implements B { void methodB(){ } } everything is fine methodA should be overriden in class C O class C should be abstract O either b or c

What are the benefits of having a destructor for a class?

Describe how you can use an interface as an alternative to a class to specify the type for a parameter.

T/F 3. All Java classes must contain a main method which is the first method executed when the Java class is called on.

In order to do a range of tasks, both code and forms employ the ACTION and METHOD attributes.

A cash processing company has a class called Account used to process transactions: Method/Constructor Description public Account (Client c) public boolean process (Transaction t) constaucts an account using client information processes the next transaction, returning true if transaction was approved, false otherwise Account objects interact with Transaction objects, which have many methods including: Method/Constructor Description returns the value of this transaction in pennies (could be negative, positive or zero) public int value() The company wishes to create a slight modification to the Account class that filters out zero-valued transactions. Design a new class called FilteredAccount whose instances can be used in place of an Account object but which include the extra behavior of not processing transactions with a value of 0. More specifically, the new class should indicate that a zero-valued transaction was approved but shouldn't call the process method in the Account class to...

T/F 3. Any Java class must have a main method, which is the first method that is called when the Java class is invoked.

Why might a class need to implement a destructor?

Define Invoking a Constructor.

1. A method stub is a) a short method b)a method with an abrupt end c)a method whose header has not yet been written d) a method whose statements have not yet been written 2 An abstract class can always be instantiated as an object can sometimes be instantiated as an object can often be instantiated as an object can never be instantiated as an object 3)When a derived class defines a member method that has the same name, parameters, and return type as a base class's method, the member method is said to overload the base class's method overreach the base class's method override the base class's method overshadow the base class's method 4. What would be the best code to print out all the elements of an array for (int i = 0 ; i <= arry.length ; i++ ) System.out.println(arry[i]); for (int i = 0 ; i < arry.length ; i++ ) System.out.println(arry[i]); for (int i...