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>> is a signed right shift operator
>>> unsigned right shift operator

The unsigned right shift operator ">>>" shifts a zero into the leftmost position, while the leftmost position after signed right shift operator ">>" depends on sign extension.

Just putting example to make it clearer
final int x = -Integer.MAX_VALUE;
System.out.println(Integer.toBinaryString(x)); // prints 10000000000000000000000000000001
System.out.println(Integer.toBinaryString(x>>1)); // prints 11000000000000000000000000000000
System.out.println(Integer.toBinaryString(x>>>1)); // prints 01000000000000000000000000000000

typo