Java Questions

Enhanced For Loop The Enhanced For Loop in Java provides an alternative approach to traverse the array or collection in java and it eliminates the possibility of errors and makes it more readable. Its main purpose is to traverse the array or collection of elements. This loop is also called a For-Each loop. It is […]

Method Overriding in Java Example An instance method in a child class that has the same method signature of the parent class is sail to be overriding the parent’s class method. Using this feature we can provide a child-specific implementation for the method. We can use the @Ovevrride annotation when we are overriding the method. […]

CurrencyConverter Java Program(Dollars to Pounds) In this tutorial, we will write a java program to convert Dollar to Pound and vice-versa. We will provide a program menu to the user. The Dollar to the pound exchange rate is taken as a constant in the program. In real-time, the exchange can vary from time to time. […]

What is an ArrayList? ArrayList is a resizable array in Java. It is an implementation of the List interface. Array is fixed in size, whereas ArrayList can grow or shrink dynamically as needed to accommodate adding and removing elements. Class Diagram ArrayList is random access list. It supports fast and generally constant access time for […]

String Literals vs String Objects String is associated with a string literal in the form of double-quoted text. You can assign a string literal directly into a String variable. String objects are created by a new operator and String constructor. However, this is not recommended in Java. Strings are immutable String is an immutable sequence […]