Stack Overflow
Stack Overflow

Questions tagged [cloneable]

163 questions
2
votes
2 answers

Improving safety of Clone pattern

If one wants to implement Clone pattern in C++, he might not be sure about safety, because derived class may forget to override it: struct A { virtual A* Clone() const { return new A(*this); } } struct B : A { int value; }; int…
Nikita Petrenko
  • 1,068
  • 1
  • 7
  • 10
2
votes
2 answers

Clone an android application programmatically

There are some Android applications which allow user to clone existed application on the phone. eg: http://fixoptimize.com/app-cloner Can you explain how these cloners work? Thank you.
Anh-Tuan Mai
  • 1,129
  • 19
  • 36
2
votes
1 answer

Generic class, calling generic class with clone

I need to make a generic class with implements cloneable, and to accomplish this I needed to do a clone method of the class and another method to get this method. The teacher passed it in the room, but is not working and giving Method error. What…
lisa15x
  • 23
  • 3
2
votes
2 answers

No clone method in String Class

A technical aptitude question HashMap map = new HashMap(); String key1 = "key1"; map.put(key1, "value1"); String key2 = key1.clone(); map.put(key2, "value2"); What are the contents of the map object? I answered it as…
Bonny Mathew
  • 171
  • 1
  • 7
2
votes
6 answers

Cloneable behaviour

Java doc says - The class Object does not itself implement the interface Cloneable, so calling the clone method on an object whose class is Object will result in throwing an exception at run time. Which is why clone method in Object class…
carnot
  • 101
  • 1
  • 3
  • 9
2
votes
1 answer

Java: Is setters should make `Clone` or it's up to caller pass `new` copy?

What considered to be the best & common practice if I want to make sure that after setter is called the object cannot be modified from outside? In the code there is detailed simple self explained example, With 2 options dilemma. //caller…
michael
  • 3,835
  • 14
  • 53
  • 90
2
votes
2 answers

why protected clone() method is not accessible using inheritance in same package

I know by inheritance all classes inherit methods from Object class.Similarly if we extends one class with other it also inherit method. Then why we can call inherited protected method from other class and not able to call inheritate method from…
Javakar
  • 21
  • 2
2
votes
3 answers

CXF: Cloneable classes from wsdl2java?

Is it possible to have CXF's wsdl2java emit cloneable classes? Maybe via some option or a plug-in? What I need to do is copy by value a rather complex schema structure from one object tree to another and would rather not get/set each member value…
Bjorn Thor Jonsson
  • 827
  • 1
  • 10
  • 21
2
votes
0 answers

Cloning an object in java: org.objenesis.ObjenesisException: java.lang.NoSuchMethodException: newInstance [class java.lang.Class, int]

I am using Espresso to test my application. I am also using the library uk.com.robust-it:cloning (Java Deep Cloning Library) version 1.9.2 to clone an object. If I am using the application, I have no exception, but when the tests are running, I…
Cícero Moura
  • 2,027
  • 1
  • 24
  • 36
2
votes
3 answers

Question about the Cloneable interface and the exception that should be thrown

The Java documentation says: A class implements the Cloneable interface to indicate to the Object.clone() method that it is legal for that method to make a field-for-field copy of instances of that class. Invoking Object's clone method…
rfgamaral
  • 16,546
  • 57
  • 163
  • 275
2
votes
0 answers

Why do I have the option to remove the throws clause here even though the interface I inherit from defined it?

The interface in question is FileVisitor, which defines this method: FileVisitResult preVisitDirectory(T dir, BasicFileAttributes attrs) throws IOException; My really simple implementation is this: public final class FailFastDeletionVisitor …
fge
  • 119,121
  • 33
  • 254
  • 329
2
votes
2 answers

Implementing Clonable in Java

In which cases should I use this way: public A clone() throws CloneNotSupportedException { A clone = (A)super.clone(); clone.x= this.x; return clone; } And in which cases should I use that way: public ShiftedStack clone() throws…
Artium
  • 5,147
  • 8
  • 39
  • 60
2
votes
4 answers

Why can't I type Clone() properly?

Like any other C# programmer, I face the problem of how best to express the copying of objects. Specifically, I have a class hierarchy in which all objects must be copyable. It has already been discussed whether to use copy constructors (which C#…
reinierpost
  • 8,425
  • 1
  • 38
  • 70
2
votes
2 answers

how to clone a Parcel object

I want to clone a Parcel object (not parcelable). I can't use clone() method since it is protected. I also can't call it using reflection since Parcel class doesn't implement 'clonable' I tried to perform the solution of issue: Create a copy of…
morang
  • 151
  • 2
  • 10
2
votes
4 answers

super.clone() operation not works in Derived Class

This is raised because of the technical difficulties faced in my Project. Problem: I need to clone a Object of a Class where it extended the properties(Inheritance) from a third party library class(where we don't have access to modify its…
omega
  • 592
  • 2
  • 5
  • 21
1 2 3
…
10 11