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Top level class or outermost class cannot be static

April 20, 2015

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How to Avoid Common Errors That Can Result In Memory Leaks in Java ?

Avoid Common Errors That Can Result In Memory Leaks In Java, memory bugs often appear as performance problems, because memory leaks usually cause performance degradation. Because Java manages the memory automatically, developers do not control when and how garbage is collected. To avoid memory leaks, check your applications to make sure they: Release JDBC ResultSet, Statement , or connection. Release failures here are usually in error conditions. Use a finally block to make sure these objects are released appropriately. Release instance or resource objects that are stored in static tables. Perform clean up on serially reusable objects. An example is appending error messages to a Vector defined in a serially reusable object. The application never cleaned the Vector before it was given to the next user. As the object was reused over and over again, error messages accumulated, causing a memory leak that was difficult to track d...

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Top level class or outermost class cannot be static

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