How do I make sure JDK is installed?

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Tags

1. #start
2. #command
3. #panel
4. #environment
5. #version
6. #variables
7. #advanced
8. #control
9. #listed
10. #prompt
11. #check
12. #program
13. #correctly
14. #system
15. #installed
16. #features
17. #there