Object Initialization in Java Object initialization in Java is a process that involves three steps:
Declaration: This is the process of defining the variable, along with its type and name. For example, int id; is a declaration.
Instantiation: Java provides the new keyword to create an object of the class.
Initialization: The new keyword is followed by a call to a constructor. The call initializes a new object. Initialization is all about assigning a value. For example, id = 1; is an initialization.
Here’s an example of object initialization in Java:
Object initialization
User user = new User();
In this example, User is the class, user is the object of the class User, and new User() is the instantiation and initialization.
Object Cleanup in Java Object cleanup in Java is primarily handled by the garbage collector. When the garbage collector is ready to release the storage used for your object, it will first call finalize(), and only on the next garbage-collection pass will it reclaim the object’s memory. The finalize() method is called the finalizer. Finalizers get invoked when JVM figures out that this particular instance should be garbage collected. The main purpose of a finalizer is to release resources used by objects before they’re removed from the memory.
Here’s an example of a finalizer in Java:
Onject cleanup
@Override
public void finalize() {
try {
reader.close();
System.out.println(""Closed BufferedReader in the finalizer"");
} catch (IOException e) {
// ...
}
}
In this example, the finalize() method is used to close a BufferedReader before the object is garbage collected.
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