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Author Archives: ProgramCreek

Java Reflection Tutorial

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In this tutorial, I mainly write some examples to introduce what Java reflection can do. Hopefully, it can give you an overview of this concept. Please leave your comment for suggestions. What is Reflection? In brief, reflection is the ability of a program to examine and modify the structure and behavior of an object at runtime. This concept is sometimes ...

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Top 10 Questions of Java Strings

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The following are top 10 frequently asked questions about Java Strings. 1. How to compare strings? Use “==” or use equals()? In brief, “==” tests if references are equal and equals() tests if values are equal. Unless you want to check if two strings are the same object, you should always use equals(). It would be better if you know ...

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Top 10 Books For Advanced Level Java Developers

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Java is one of the most popular programming language nowadays. There are plenty of books for beginners. But to those who have programmed with Java for a while, some of them may look somehow simple and redundant. The beginner’s books do not bring fresh and interesting ideas. However, advanced Java books are not always right at hand, not partially because ...

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Backreferences in Java Regular Expressions

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Backreferences in Java Regular Expressions is another important feature provided by Java. To understand backreferences, we need to understand group first. Group in regular expression means treating multiple characters as a single unit. They are created by placing the characters to be grouped inside a set of parentheses – ”()”. Each set of parentheses corresponds to a group. Backreferences are ...

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