Lotus Domino/Notes Version / Java Version (JVM)
1.0 up to 3.x: N/A
4.5 up to 4.6.7a: JRE/JDK 1.1
5.0 up to 5.0.13a: JRE/JDK 1.1.8
6.0 up to 6.5.6: JRE/JDK 1.3.1
7.0 up to 7.0.3: JRE/JDK 1.4.2
8.0 up to 8.0.2: JRE/JDK 1.5.0
8.5: JRE/JDK 1.6.0

Verifying the version:

1) Open the command prompt

2) Go to the JVM directory of Domino or Notes

Example: C:\Arquivos de programas\IBM\Lotus\Notes\jvm\bin

3) Type the command java -version - we get the following for release 8.0:

java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pwi32devifx-20070423 (if
ix 118970: SR4 + 117731 + 117180))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223ifx-2007
0423 (JIT enabled)
J9VM - 20070420_12445_lHdSMR
JIT  - 20070109_1805ifx5_r8
GC   - 200701_09)
JCL  - 20070411

or in linux

[notes@correio notesdata]$ /opt/ibm/lotus/bin/java -version
java version "1.6.0"
Java(TM) SE Runtime Environment (build pxi3260sr1ifix-20081022_01(SR1+IZ21387+IZ
25540+IZ25963+IZ29722+139167+133399+128712+140597+PK64768+J4338+J4513+J4568+J414
3+J4538))
IBM J9 VM (build 2.4, J2RE 1.6.0 IBM J9 2.4 Linux x86-32 jvmxi3260ifx-20081002_2
3977  (JIT enabled, AOT enabled)
J9VM - 20081002_023977_lHdSMr
JIT  - r9_20080415_1520ifx7
GC   - 20080415_AA)
JCL  - 20081022_01