title: Can we keep values of a HashMap in memory even after java code is terminated?
body: <p>A particular HashMap contains information which will be used by three Java codes (b.java, c.java and d.java). a.java is another code which puts variables inside that HashMap. Now, I want that HashMap to be used by these three java codes. As, after termination of a.java, the HashMap is lost, I am unable to do it. I dont want to use file writing and reading to make the system faster. What way I can achieve it using Java?</p>