java - How to initialize a variable shared by all servlet in web application -

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• using special auto start servlet initialize on startup , share application data 1 answer

i want create array of camera object, defined java class. object shared servlets in web app, , want initialized when server started, not when load servlets. how go doing it?

my initializations:

public camera[] dummycams = new camera[5];     dummycams[0] = new camera("pcam", 640, 480);     dummycams[1] = new camera("icam", 641, 481);     dummycams[2] = new camera("acam", 642, 482);     dummycams[3] = new camera("hcam", 643, 483);     dummycams[4] = new camera("mcam", 644, 484); 

i using glassfish server, java ee7.

you can add array in servletcontext.

you can use servletcontextlistener listen when servlet context initialization event , retrieve servletcontext , add array it.

you can go through api here servletcontextlitener