How do I check if JDK is installed?

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Tags

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