Java
'clone()' should have return type equal to the class it contains
Warning
New
Last modified: 03 December 2024 Reports clone()
methods with return types different from the class they're located in.
Often a clone()
method will have a return type of java.lang.Object
, which makes it harder to use by its clients. Effective Java (the second and third editions) recommends making the return type of the clone()
method the same as the class type of the object it returns.
Example:
class Foo implements Cloneable {
public Object clone() {
try {
return super.clone();
} catch (CloneNotSupportedException e) {
throw new AssertionError();
}
}
}
After the quick-fix is applied:
class Foo implements Cloneable {
public Foo clone() {
try {
return (Foo)super.clone();
} catch (CloneNotSupportedException e) {
throw new AssertionError();
}
}
}
- By ID
Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.
CloneReturnsClassType
Inspection Details | |
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By default bundled with: | |
Can be installed with plugin: | Java, 243.23126 |
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