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Learn to create aspectj based interceptor in spring boot application to write performance logging based on time taken in method executions with example.

The post Spring Boot Performance Logging with AspectJ AOP appeared first on HowToDoInJava.

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Learn to configure caching in spring boot 2 application using ehcache 3.x. Learn to use annotation based cache config as well as manually with CacheManager.

The post Spring boot 2 and ehcache 3 example appeared first on HowToDoInJava.

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Learn to configure caching in spring boot application using ehcache 2.x. Learn to use annotation based cache config as well as manually updating cache with CacheManager.

The post Spring boot ehcache 2 example appeared first on HowToDoInJava.

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Java program to find the count of vowels and consonants in a given input string. Remember a string in java can have several kind of characters.

The post Java program to count vowels and consonants in a String appeared first on HowToDoInJava.

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In these java programs, learn to reverse the words of a string in Java without using api functions. We can reverse the words of string in two ways: Reverse each word’s characters but the position of word in string remain unchanged. Reverse the string word by word but each word’s characters remain unchanged. 1. Reverse […]

The post Java program to reverse words in string without using functions appeared first on HowToDoInJava.

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Learn to sort an array of strings alphabetically. In given java program, strings are given as input from console and after sorting - printed in the console.

The post Java program to sort strings array in alphabetical order appeared first on HowToDoInJava.

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In regex, we can match any character using period "." character. To match only a given set of characters, we should use character classes.

The post Regex – Match any character or set of characters appeared first on HowToDoInJava.

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1. Line Anchors In regex, anchors are not used to match characters. Rather they match a position i.e. before, after, or between characters. To match start and end of line, we use following anchors: Caret (^) matches the position before the first character in the string. Dollar ($) matches the position right after the last […]

The post Regex – Match Start or End of String (Line Anchors) appeared first on HowToDoInJava.

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Learn to swap two numbers in given two Java programs. First program uses a temporary variable while second program does not uses any temp variable.

The post Java program to swap two numbers appeared first on HowToDoInJava.

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Learn to write program to find first prime numbers using Java 8 Stream API, where N is any given input number to the application.

The post Java program to find first N prime numbers appeared first on HowToDoInJava.

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