How does Java calculate length of primitive array? -

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this question has answer here:

code:

char[] chars = "abcd".tochararray(); system.out.println(chars.length);

question: how length calculate java here? since char not class, not sure length stored. if isn't stored, calculated every time chars.length? (i presume not)

the thing wrote char[] object, array, , has public final field called length. calculated once when array in created. objects has tostring(), notify(), etc...


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