Have a look at my MonkeyRunner code. Should be easier then Java. Change path to save file, and replace phone number. I had only 1 problem. Cant Hangup a call.

#! /usr/bin/env monkeyrunner
       
    Created on Apr 1, 2011

    @author: sj
       

    import sys

    # import the MonkeyRunners modules used by this program
    from com.android.monkeyrunner import MonkeyRunner, MonkeyDevice, MonkeyImage







    def browse(d):
        d.broadcastIntent("http://www.google.com/", "ACTION_MAIN")
        #d.startActivity(component="com.android.browser/.BrowserActivity")

    def debug(device):
        print" package:%s" % device.getProperty( am.current.package )
        print" action:%s" % device.getProperty( am.current.action )
        print" comp.class:%s" % device.getProperty( am.current.comp.class )
        print" comp.package:%s" % device.getProperty( am.current.comp.package )
        print device.getProperty( display.width ), device.getProperty( display.height )

    def screenshot(d):
        MonkeyRunner.sleep(1.0)
        result = d.takeSnapshot()
        MonkeyRunner.sleep(1.0)
        result.writeToFile( /yourPath/device.png ,  png )  

    def call(d):

        d.startActivity(component="com.android.contacts/.TwelveKeyDialer")
        print "Start Activity"

        MonkeyRunner.sleep(1.0)

        d.type("+XXXXXXXX")

        # Call number.
        print "Call"
        d.touch(190, 800,  DOWN_AND_UP );
        # not working device.press( KEYCODE_CALL ,  DOWN_AND_UP )

        print "Wait 10 sec"

        MonkeyRunner.sleep(10.0)

        # HangUp Call
        #device.press( KEYCODE_ENDCALL ,  DOWN_AND_UP )

        print "Hang Up"
        #x1 = 215
        #x2 = 230
        #y = 700
        #start = (x1,y)
        #end = (x2, y)
        #steps = 2
        #pause = 0.2
        #device.drag(start, end, pause, steps)

        d.startActivity(component="com.android.phone/.InCallScreen")
        #device.touch(230, 700, "DOWN");
        MonkeyRunner.sleep(1.0)
        #device.touch(230, 700, "UP");

        d.touch(230, 700,  DOWN_AND_UP );
        #device.touch(270, 650,  DOWN_AND_UP );


    def main():
        print "Start"

        # Connect to the current device returning the MonkeyDevice object
        device = MonkeyRunner.waitForConnection()

        #MonkeyRunner.alert("Starting Activity", "monkeyrunner", "OK")

        if not device:
            print "Couldn t get connection"
            sys.exit()

        print "Found device"

        #call(device)
        browse(device)
        debug(device)
        screenshot(device)


        device.press( KEYCODE_ENDCALL ,  DOWN_AND_UP )

        MonkeyRunner.sleep(10.0)




    if __name__ ==  __main__ :
        main()

I have learned monkeyrunner via this small guide. http://antoine-merle.com/introduction-to-the-monkey-runner-tool-2/

You do not have to use java, but to start low on python. For the ide you can use pycharm, which will give you a better start when creating classes in python.

As of the code which @Boris_Ivanov showed, this is a good start, but I would delete the "MonkeyImage" - as you are not using it also pushing the test cases into different files would add to speed if required to use.

One thing to talk about:

    Connect to the current device returning the MonkeyDevice object
    device = MonkeyRunner.waitForConnection()
    #MonkeyRunner.alert("Starting Activity", "monkeyrunner", "OK")

I am using something like this and it does work all the way:

    device = MonkeyRunner.waitForConnection(60)
    if not device:
        raise Exception( Can not connect to device )

Best luck.