simple java swing program that use jre 1.7 and 1.8

I want a demo java program jar file that use swing and can run using jre 1.7 The interface of the program contains 2 labels and 3 buttons. Inside the program there are 2 timer tasks that are running separately: the first one contains increment counter and the second one contains decrement counter. There are also three buttons . the first one for terminating the timertask 1 using random exception error Which mean their should not be handling or catching for the random error. And the same thing will be for button2 to terminate the timertask 2 and button 3 to terminate all the program with random exception error. I want the program to have the ability of :  The ability of the program to send the error description when it is happened to a Gmail email  The ability of the timertask 1 to check if timertask 2 is running and if it is not it will run timertask2 again and the timer task2 will continue running from the last state.  The ability of the timertask 2 to check if timertask 1 is running and if it is not it will run timertask1 again and the timer task1 will continue running from the last state.  the application should running in windows environment and if it is terminated or crashed I want it to have the ability to save it is state and restart itself again after 1 min for example