Know some hashcodes

Some of the hashcodes of interest's are in java wrappers

Boolean - hashCode() - 1231 for 'true' and '1237' for 'false'
Integer - hashCode() - will return the primitive int value
Byte - hashCode() - primitive int value of the byte is returned as hashcode
Charater- hashCode() - primitive int value of the byte is returned as hashcode
Long - value of the following expression

(int)(this.longValue()^(this.longValue()>>>32))