How to check whether a function is already called in java?
<p>I have called a method twice in my Android Java project but i want to invoke it only once. When I am calling the method for a second time, I want to check whether the method has already been invoked or not. Code is something like this:</p>

<pre><code>class SomeClass {
    //called with certain condition
    private void a(){
         c(); //first call
    }

    private void b() {
         c(); //second call,check here whether function is invoked already or not,if invoked not invoke here or vice-versa
    }

    //called with certain condition
    private void c() {

    }
}
</code></pre>
