JAVA9 new Features--syntax improvements: try Statements

1. Examples of Use

Before Java8, we were used to dealing with the closing of resources:

In Java 8, you can implement automatic shutdown of resources, but all resources that must be closed after execution must be initialized in a try clause, or the compilation does not pass. As shown in the following example:

In Java 9, it is easier to write a try with a resource statement, and we can use a resource that has already been initialized in a try clause, when the resource is final:

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JAVA9 new Features--syntax improvements: try Statements