instanceof operator

[Willie Toma]

There must be a reference type after the instanceof operator.
By 'reference type', you mean something like Object, and not the variable representing an Object...?

[Cindy Glass]

You need to name the Class or Interface that you are asking if the object is an instance of it.
if (myObj instanceof String){
//do something Stringlike
}

[Junilu Lacar]

reference instanceof ReferenceType
ReferenceType can also be an array reference type, e.g.
ref instanceof int[] // true if ref is an int[]
ReferenceType cannot be java.lang.Class (compile time error) except when reference is declared as an Object.


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Junilu Lacar
Sun Certified Programmer for the Java� 2 Platform