Garbage Collection in Java

Publicado el: 08 mayo 2024
en el canal de: Anindita Das Bhattacharjee

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Integer: Integer is a class in Java that wraps a primitive int value into an object. This allows you to treat int values as objects and provides utility methods for working with them.
new Integer(4): This part of the statement creates a new instance of the Integer class with the value 4.
An object is said to be unreachable if it doesn’t contain any reference to it.
An object is said to be eligible for GC(garbage collection) if it is unreachable.
Once we make an object eligible for garbage collection, it may not destroy immediately by the garbage collector. Whenever JVM runs the Garbage Collector program, then only the object will be destroyed.
Just before destroying an object, Garbage Collector calls finalize() method on the object to perform cleanup activities. Once finalize() method completes, Garbage Collector destroys that object.
protected void finalize() throws Throwable
In this example, myMethod() is declared to potentially throw any type of exception that extends Throwable. This means that callers of myMethod() must handle or declare the exceptions it may throw, either by using a try-catch block or by declaring them in their own throws clause.

However, it's worth noting that declaring throws Throwable is generally discouraged in Java code, especially for public methods, because it doesn't provide specific information about the exceptions that can be thrown. It's better practice to declare specific checked exceptions that the method can throw, or if the method can throw unchecked exceptions, to document them properly. This makes the code more readable and helps users of the method understand how to handle potential exceptions.

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