C:\>sqrttest jdk1.3.1
java version "1.3.1"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.1-b24)
Java HotSpot(TM) Client VM (build 1.3.1-b24, mixed mode)
Math.sqrt: 141
SlowSqrt.sqrtalgorithm: 5437
SlowSqrt.sqrtnative: 516

C:\>sqrttest j2sdk1.4.2_02
java version "1.4.2_02"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_02-b03)
Java HotSpot(TM) Client VM (build 1.4.2_02-b03, mixed mode)
Math.sqrt: 125
SlowSqrt.sqrtalgorithm: 5515
SlowSqrt.sqrtnative: 1422

C:\>sqrttest jdk1.5.0
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-b64)
Java HotSpot(TM) Client VM (build 1.5.0-b64, mixed mode)
Math.sqrt: 141
SlowSqrt.sqrtalgorithm: 5093
SlowSqrt.sqrtnative: 1422