core java
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class
Get the super-class of an object
In this example we shall show you how to get the superclass of an Object. We can try to get…
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class
Get an object’s class name
With this example we are going to demonstrate how to get an object’s class name. We can get the class…
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class
Check where a class was loaded from
This is an example of how to check where a class was loaded from. To check where a class was…
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regex
Simple validation example
In this example we shall show you how to make a simple validation of a String, using a Matcher against…
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regex
Find duplication in strings example
With this example we are going to demonstrate how to find duplication in Strings. In order to check if there…
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regex
Determine if a string matches a pattern exactly
This is an example of how to determine if a String matches to a Pattern exactly. Using a Matcher to…
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regex
Matcher.appendReplacement example – Part 2
In this example we shall show you how to use Matcher.appendReplacement(StringBuffer sb, String replacement) API method to append to a…
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regex
Strip extra spaces in a string
With this example we are going to demonstrate how to strip extra spaces in a String. In short, to strip…
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regex
Simple positive Lookbehind
This is an example of a simple positive look behind. Positive look behind methods assert the existence of a pattern…
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regex
Find occurances of a letter in a string
In this example we shall show you how to find occurances of a specific letter in a String. To find…
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