Here are 7 rules to remember regarding Java Generics to understand Generics and handle interview and coding questions on Core Java. Object <– Fruit <– (Orange, Mango, etc siblings) Rule 1: Java generics differ from C++ templates. Java generics (at least until JDK 8), … Read more ›...
Java-Success.com 800+ Java & Big Data Interview Q&As with lots of code & real-life examples to fast- track & go places.
Blog Archives
03: 12 Java Generics interview Q&As
Q1 What do you understand by the term type erasure with regards to generics? A1. The term type erasure is used in Java generics. In the interest of backward compatibility, robustness of generics has been sacrificed through type erasure. Type erasure takes place at compile-time. … Read more ›...
04: 5 Java generics Interview Q&As on wildcards with examples
Q1. If java.lang.Object is the super type for java.lang.Number and, Number is the super type for java.lang.Integer, am I correct in saying that List<Object> is the super type for List<number> and,
…
05: Overloaded methods Vs Generic methods in Java with JD-GUI & javap to look under the covers
In an earlier post we looked at Understanding Overriding, Hiding, and Overloading in Java?. We also discussed how “method overriding” gives polymorphism. In this post, let’s see how a “generic method” can replace a number of overloaded methods. Then see under the hood as to what happens to the compiled code.
…
Java Generics in no time “? extends” & “? super” explained with a diagram
Generics in Java can be be a bit tricky to get your head around. Hope the explanation below enhances your understanding of generics. This complements 5 Java generics interview Q&As with examples. Plain old List, List <Object>, and List<?> The plain old List: is a heterogeneous mixture or a mixed...
Mechanical Engineer to self-taught Java engineer within 2 years & a freelancer within 3 years. Freelancing since 2003. Preparation empowered me to attend 190+ job interviews & choose from 150+ job offers with sought-after contract rates. Author of the book “Java/J2EE job interview companion“, which sold 35K+ copies & superseded by this site with 2,050+ registered users. Amazon.com profile | Reviews | LinkedIn | LinkedIn Group | YouTube
Contact us: java-interview@hotmail.com
© 2021 Java-Success.com
Responsive WordPress Theme powered by CyberChimps
Top
