How do I increase my Java RAM for Minecraft?

Related questions

1. How is JVM heap size calculated?
2. What is the max Java heap size?
3. What is maximum Java heap size?
4. What is the Java heap size?
5. How do I reduce Java heap space?
6. What causes Java heap space error?
7. What is default heap size Java?
8. What is the maximum heap size in Java?
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Tags

1. #xmx1g
2. #settings
3. #allocate
4. #modify
5. #launch
6. #other
7. #changes
8. #amount
9. #arguments
10. #profile
11. #toggle
12. #options
13. #enable
14. #minecraft
15. #select
16. #button
17. #change
18. #advanced
19. #replace
20. #option