it will allow both the additions and the program willĪfter Java Generics: //Compiler now knows the type of the ArrayList so it will ![]() This allows the code to be fixed during compilation process.īefore Java Generics: //Compiler doesn't know the type of this ArrayList so It is nice to check such errors during compile-time. As shown below, generics allowed us to check the type mismatch during compile-time rather than run-time. The primary goal of generics is to ensure type safety. We will also cover wildcard generics with examples. In this tutorial, we will learn why generics are introduced and how to use them in Java. Before the introduction of generics, type safety was not available, which caused program to throw errors during runtime. ![]() ![]() Generics was introduced in 2004 in Java programming language.
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