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Java's canonical constructor Keen-eyed Java developers will notice that the above example uses a parameterized constructor to create an instance of the Java record, even though no constructor is ...

Java's default constructor allows developers to create instances of classes when no other constructors are explicitly defined. The default constructor in Java takes no arguments -- it simply ...

Fewer bugs: Since Java handles the type casting automatically, you avoid mistakes like ClassCastException s. In short, pattern matching makes your Java code simpler, safer, and easier to read.

Covariance and contravariance might seem esoteric, but you'll need these concepts more than ever as the Java language evolves. Get started with type dependency in array types, generic types, and ...