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A class is only instantiated to get its class tag, instead of using its name and the .class pseudo-field.
It is often convenient to use a literal or a unique object instead of explicitly constructing new instances, when the same object is used many times, since distinct objects are created at each new statement, which affects the performance of the code. Moreover, objects used instead of literals are often short-lived and consequently must be claimed back from the garbage-collector.
| Class Name | Unnecessary Instantiation for GetClass (Java) |
|---|---|
| Significance | reliability |
| Mnemonic | JAVA.CLASS.UIGC |
| Categories | None |
| Availability | Available for Java only. |
| Enabling | Checks for this warning class are enabled by
default. To disable them, add the following WARNING_FILTER rule to the
project configuration file.
WARNING_FILTER += discard class="Unnecessary Instantiation for GetClass (Java)" |
Use string literals instead of the creation of constant strings. Use factory methods or the automatic boxing mechanism instead of the instantiation of a primitive wrapper class.
The following configuration file parameters affect checks for this warning class.
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