Java – How to determine an object’s class

inheritancejava

If class B and class C extend class A and I have an object of type B or C, how can I determine of which type it is an instance?

Best Answer

if (obj instanceof C) {
//your code
}

Related Solutions

Java – How to efficiently iterate over each entry in a Java Map

Map<String, String> map = ...
for (Map.Entry<String, String> entry : map.entrySet()) {
    System.out.println(entry.getKey() + "/" + entry.getValue());
}

On Java 10+:

for (var entry : map.entrySet()) {
    System.out.println(entry.getKey() + "/" + entry.getValue());
}

Java – Create ArrayList from array

new ArrayList<>(Arrays.asList(array));

Best Answer

Related Solutions

Java – How to efficiently iterate over each entry in a Java Map

Java – Create ArrayList from array

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