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mrleolink/UnsignedRightShiftOperator.java

Created October 8, 2015 05:27
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Unsigned right shift operator explanation
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UnsignedRightShiftOperator.java
int value = -229;
System.out.println(value);
System.out.println(value >> 5);
System.out.println(value >>> 5);
System.out.println(Integer.toBinaryString(value));
System.out.println(Integer.toBinaryString(value >> 5)); // `>>` preserves integer's sign
System.out.println(Integer.toBinaryString(value >>> 5)); // `>>>` doesn't preserve integer's sign, just shift everything to the right then fill all the empty bit on the left with 0
//======================= RESULT
-229
-8
134217720
11111111111111111111111100011011
11111111111111111111111111111000 // still negative number (-8)
111111111111111111111111000 // equals to 00000111111111111111111111111000 -> a positive number (134217720)
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