Java does not support multiple inheritance because of two reasons: In java, every class is a child of Object class. When it inherits from more than one super class, sub class gets the ambiguity to acquire the property of Object class.. In java every class has a constructor, if weRead More →
In Java 8, Predicate is a functional interface, which accepts an argument and returns a boolean. Usually, it used to apply in a filter for a collection of objects. What is the purpose of predicate T interface? Predicate is a generic functional interface that represents a single argument function thatRead More →
Throwing Exceptions When an exception is thrown the method stops execution right after the “throw” statement. Any statements following the “throw” statement are not executed. Does execution continue after catch Java? The program resumes execution when the exception is caught somewhere by a “catch” block. Catching exceptions is explained later.Read More →
Combine the thoughtfulness of a gift card with the flexibility of money. Delivered by email or printed at home, with the suggested use of spending the gifted money at BigFoot Java. … There is no physical gift card to carry around or lose. How many locations does BigFoot Java have?Read More →
lang which contains string class, StringBuffer class, StringBuilder class, all wrapper classes, runnable interface, etc. String class contains a number of methods such as length(), toUpperCase(), toLowerCase() etc. 2. Java contains 14 predefined packages which are main packages. Which is the largest package in Java? PortableInterceptor package contains the largestRead More →
RuntimeException is intended to be used for programmer errors. As such it should never be caught. There are a few cases where it should be: you are calling code that comes from a 3rd party where you do not have control over when they throw exception. Are unchecked exceptions recoverable?Read More →
The main difference between EJB and Java Beans is that the EJB is a server-side software component that encapsulates the business logic of an application while JavaBeans are classes that encapsulates multiple objects into a single object that helps to create reusable software components for Java. Are JavaBeans coffee? JavaRead More →