JDK-4881419 : The type of X[].clone() should be X[]
  • Type: Enhancement
  • Component: core-libs
  • Sub-Component: java.lang
  • Affected Version: 5.0
  • Priority: P5
  • Status: Closed
  • Resolution: Fixed
  • OS: solaris_8
  • CPU: generic
  • Submitted: 2003-06-19
  • Updated: 2010-09-25
  • Resolved: 2011-05-18
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JDK 7
7 b112Fixed
Description
The type of X[].clone() should be X[]
Comments
SUGGESTED FIX # HG changeset patch # User darcy # Date 1283551210 25200 # Node ID a6c142240837370c71e6822815c2d11c7edba81c # Parent e17654f00d93ca74556ff75efe3e9e06e3afd4d6 4881419: The type of X[].clone() should be X[] Reviewed-by: martin --- a/src/share/classes/java/lang/Object.java Fri Sep 03 21:03:45 2010 +0100 +++ b/src/share/classes/java/lang/Object.java Fri Sep 03 15:00:10 2010 -0700 @@ -189,7 +189,9 @@ public class Object { * specific cloning operation. First, if the class of this object does * not implement the interface {@code Cloneable}, then a * {@code CloneNotSupportedException} is thrown. Note that all arrays - * are considered to implement the interface {@code Cloneable}. + * are considered to implement the interface {@code Cloneable} and that + * the return type of the {@code clone} method of an array type {@code T[]} + * is {@code T[]} where T is any reference or primitive type. * Otherwise, this method creates a new instance of the class of this * object and initializes all its fields with exactly the contents of * the corresponding fields of this object, as if by assignment; the
03-09-2010
PUBLIC COMMENTS See core-libs thread http://mail.openjdk.java.net/pipermail/core-libs-dev/2010-September/004807.html Changeset: http://hg.openjdk.java.net/jdk7/tl/jdk/rev/a6c142240837
03-09-2010
EVALUATION JLS3 6.4.5 and 10.7 state that "The return type of the clone method of an array type T[] is T[]." The javadoc for Object#clone could note this.
21-05-2008
EVALUATION I agree. ###@###.### 2003-08-22
22-08-2003