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I write about Java, Spring Boot.
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In Java, you will see methods like valueOf and parseInt or parseBoolean. Boolean var = Boolean.valueOf("true"); Boolean var = Boolean.parseBoolean("true"); Why we have these kind of duplicate methods? There is a difference in these methods. Bool...
Java 8 introduced us with Streams. Streams represents a sequence of objects from a source. Streams provide number of APIs for aggregate operation. Streams take arrays, collections or i/o sources for input. Two types of Stream operations: Intermedi...
If you are using strings in java , especially in a loop, don't use + operator to connect strings. String result = ""; for(String s: strArray) { result = result + s; } return result; The above is bad from a performance perspective. Every time, a...
