Why does System.out.println(-1<<32) display -1 in Java? Is there any root cause? I hope somebody can explain!
Why does System.out.println(-1<<32) display -1 in Java? Is there any root cause? I hope
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Why does System.out.println(-1<<32) display -1 in Java? Is there any root cause? I hope somebody can explain!
In Java (and JavaScript),
a << bautomatically wrapsbmodulo the bit length of the numeric type. You’re doing it with anint, which is 32 bits, and 32 % 32 = 0, therefore, no change. You can always just check for abof more than (bit length – 1) and automatically set to zero instead of shifting.