In the program given below, we are creating an object of Student class using theclone()method. This method can be used if and only if at least one object of the class is already created. Also makes sure thatCloneableclass is implemented in a class. While calling theclone()method we requ...
When an object of class is created, the memory is allocated in the heap area to store instance variables. After the creation of an object,JVMproduces a unique reference number (address) for that object. This unique reference number is calledhash code number. This reference number is unique fo...
In case you need to return a mutable object then create copy of your internal mutable object to avoid returning the original object in your methods.Advantages of immutable objects: An immutable object remains in exactly one state, the state in which it was created. Therefore, immutable object ...
A deep copy is an alternative that solves this problem. Its advantage is thateach mutable object in the object graph is recursively copied. Since the copy isn’t dependent on any mutable object that was created earlier, it won’t get modified by accident like we saw with the shallow copy....
In the realm of modern software development, handling data interchange formats likeJSON(JavaScript Object Notation) is acommon task. Java, being a versatile and widely used programming language, provides libraries and tools that make working with JSON a breeze. ...
packagedelftstack;importjava.io.*;importjava.util.*;publicclassSerialize_Object{publicstaticvoidmain(String[]args)throwsIOException,ClassNotFoundException{String Serialized_String=To_String(newDemo_Serialize());System.out.println(" The Serialized String ");System.out.println(Serialized_String);Demo_Seria...
Here, arrayOfDifferentObject is an ArrayList that can hold objects of different types. We declared our ArrayList using the <Object> class in the syntax given below in code. In Java, ArrayList can hold objects of wrapper classes like double, integer, and string. We then add elements to the...
3. Estimating Object Size Using Instrumentation One way to get an estimate of an object’s size in Java is to use getObjectSize(Object) method of the Instrumentation interface introduced in Java 5. As we could see in Javadoc documentation, the method provides “implementation-specific ...
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can make a deep copy of an object by using the Cloneable() interface and overriding the clone() method. Copy constructors are an easier and more flexible way of performing a deep copy. We can also use Serialization but we need to remember that its computation is expensive than other ...