are java and sql skills affordable to become a freelancer programmer?

If I learn Java Programming Language and one of the database say My SQL will I be able to earn well as a freelancer or do I need to learn more programming languages.To be clear I am not interested in website development but I am interested in programming languages like Java and c++.

what is the scope of Java ? will I be able to earn a handsome amount as a freelancer?
Please reply.

java involes with current most industrical in-trendy programming techs at least in below 3 appdomains:

1)web app: J2EE,usually as distributed enterprise architecture (cloud is such a architecture) serverside development scheme.
2)mobile app : andriod,usually as cloud client development scheme.
3)jvm local app : J2SE ,besides offering basic services for J2EE,it also shows its usage in web or mobile app dev,such as J2SE applets and clickonce,j2se based rich web page techs – the javaFX.

web,as the most common implentment form for the cloud.finally makes it become true almostly in that :cloud = web. so : cloud appdomain = web appdomain

here:appdomains is where egineers finished all basement for the final programmers (the language and problem lvl framework for the language,appmodel for deployer,designer,programmer , all these finally integrated to form a general solutions as the uniform appmodel) left them little to do to workout a “mod app” for the “appmod engine”,and,more and more webservices apis were brought out to meet the appmodel api users to form more apps.

apache pageserver,sql database server,made up of LAMP,which is a appmodel serverside implentment for “WEB APPServer”,java with interfaces and frameworks backend for them is popular.

in cliside,javafx,applet,general js+html+css,html5 as the clientside scheme(certainly general js and htmls is popular).

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as a freelancer,your need seo techs,website surfuring expenrices more than just programming abilities.that says,you need master what areas should java be used in,where people actives in the appsdomain where there requires a java soft.

all in a sentence:the way to find and open java programming market related customer needs to feed your life.

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