Thank you for your kind reply gab1one and ctueden,
I downloaded from Image j website
Download ImageJ 1.49 bundled with Java 1.6.0_24 (37MB), bundled with 32-bit Java 1.6.0_24 (44MB) or bundled with Java 1.8.0_60 (70MB).
every instalation it said I can not locate java
which file should I choose and how can I overcome the problem?