SuperClone

Since Checkstyle 3.2

Description

Checks that an overriding clone() method invokes super.clone(). Does not check native methods, as they have no possible java defined implementation.

Reference: Object.clone().

Examples

To configure the check:

<module name="Checker">
  <module name="TreeWalker">
    <module name="SuperClone"/>
  </module>
</module>

Example:

class Example1 {
  public Object clone() throws CloneNotSupportedException {
    return super.clone();
  }
}

class SuperCloneB {
  private int b;

  // violation below, "Method 'clone' should call 'super.clone'."
  public SuperCloneB clone() {
    SuperCloneB other = new SuperCloneB();
    other.b = this.b;
    return other;
  }
}

class SuperCloneC {

  public SuperCloneC clone() throws CloneNotSupportedException {
    return (SuperCloneC) super.clone();
  }
}

Example of Usage

Checkstyle Style

Violation Messages

missing.super.call

All messages can be customized if the default message doesn't suit you. Please see the documentation to learn how to.

Package

com.puppycrawl.tools.checkstyle.checks.coding

Parent Module

TreeWalker