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01: 7 rules to remember on Java Generics for better understanding

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: …


02: 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 …


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 …


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 …


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 …


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