Can I declare a method in main Java?

No, you can’t (directly *) defined methods inside other methods in Java (and the main method is no special case here). What you want to do is to put the method in the same class as main . If main needs to call it without creating an instance of the class, then it needs to be static , but it need not be public .

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Does Oracle use Java?

Oracle Database uses the server-side internal driver when Java code executes on the server . It allows Java applications executing in the server’s Java virtual machine to access locally defined data (that is, on the same machine and in the same process) with JDBC.

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