Course tips and study guides

Study plans, exam and interview preparation, projects and placements, from people a year or two ahead and the UniCircle team. Every tip names its author and is checked by an editor before it appears.

Topics#javascript #html #java #sql #react #accessibility #dsa #interview #nodejs #arrays #error handling #forms #oop #placements #postgresql #abstract classes #acid #aggregates

2 tips tagged #java

TipEngineeringFirst yearJava String, the string pool and StringBuilderWhy Strings never change, why == on Strings is a classic bug, and when StringBuilder makes your code dramatically faster.#java#strings#stringbuilder#immutabilityUniCircle team1 min
TipEngineeringUndergraduateJava equals and hashCode: the contract and why HashSet breaks without itWhat equals and hashCode must promise each other, a short demo of a HashSet holding 'duplicates' when hashCode is missing, and how records do it for you.#java#equals#hashcode#oopUniCircle team2 min

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