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What is the result of 2^7 in Java? Why does it give this result?

What is the result of 2^7 in Java? Why does it give this result?
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Answer #1

Answer: 5

^(bitwise XOR operator)

  • ^ is used as bitwise XOR operator in java
  • ^ returns 1 if both operand values are different and return 0 if both operand values are equal
A B A^B
0 0 0
1 0 1
0 1 1
1 1 0
  • 8 bit binary form of 2 is 00000010
  • 8 bit binary form of 7 is 00000111
  • Perform XOR operation bitwise on 00000010 and 00000111
  • 00000010 ^
  • 00000111
  • 00000101 which is the binary equivalent of 5 (1x22+0x21+1x20 = 4+0+1=5)
  • So 2^7 produce result 5
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