Jailer
To see a jailer in your dream suggests that you are being restrained in some way, either by your own belief system or by someone. Alternatively, it indicates your desires to control others.
Jumpsuit
To dream that you are wearing a jumpsuit indicates that you are feeling stuck in your own identity; you are losing control of who you are. In particular, if you are wearing a racing jumpsuit, then it suggests that you are too busy trying to keep up with your fast pace life. You need to stop and reflect on what you are doing. If you dream that you are wearing a skydiving jumpsuit, then it means that you are lacking control of where you life is going. You may be dealing with issues of substance abuse. Dreaming of wearing a prison jumpsuit implies you feel trapped in some relationship or situation.
Jealousy
To dream that you are jealous of another person signifies that such feelings may be carried over from your waking life. The dream may reveal your subconscious feelings of jealousy toward that particular person. Alternatively, to dream of jealousy represents your vulnerability and your fear of intimacy. You need to work on self-love and on acknowledging your self-worth.
Jacket
To see or wear a jacket in your dream represents the image that you want to present and project to the outside world. Alternatively, it symbolises your protective and defensive persona. You tend to distant your feelings and as a result, you may isolate yourself. Consider also the colour, appearance, and type of jacket for additional significance.