although I don't understand java , the languages are interlinked
if you don't write parentheses, the preceding string will be directly concatenated with the following a , and then with the following b
for example, a is 2, b is 3, then the result is
ab:23 if you add parentheses, you will count the parentheses first. axib is 5, so the final result is
ab:5does not add parentheses, because you are preceded by "the value of a plus b", which is a string, so the addition becomes the addition of strings, so it is 632767. For example, add parentheses, aqumb is the addition of numbers, and get 32773, so the result is different
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