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I am new to java, and came to know that there are two Right Shift operators in java >> and >>>, but only one left shift operator <<. Why is it so?
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Java supports two types of right shift operators. The >> operator is a signed right shift operator and >>> is an unsigned right shift operator. The left operands value is moved right by the number of bits specified by the right operand.
Difference between >> and >>> operator. Both >> and >>> are used to shift the bits towards the right. The difference is that the >> preserve the sign bit while the operator >>> does not preserve the sign bit. To preserve the sign bit, you need to add 0 in the MSB.
The bitwise shift operators are the right-shift operator ( >> ), which moves the bits of an integer or enumeration type expression to the right, and the left-shift operator ( << ), which moves the bits to the left.
The left shift operator moves all bits by a given number of bits to the left. The right shift operator moves all bits by a given number of bits to the right. It is the same as the signed right shift, but the vacant leftmost position is filled with 0 instead of the sign bit.
Because logical and arithmetic left-shift operations are identical (from wikipedia).
Notice what happens to sign bit (left-most bit) in both left shifts.
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