title: Unable to run program
body: <p>I've been using Eclipse for running Java Programs. Everything was going well earlier but now I'm unable to get the option "1 Java Application" when I click on "Run as" despite having zero errors in my program. Could anyone help me how to deal with it ?</p>
  
  <pre><code>class Base{
      public int baseVar;
      public int var;
      public Base(int v){
       baseVar=v;
       System.out.println("Base class parameterized constructor");
       }
  }
  class Der extends Base{
      public int derVar;
      public int var;
      public Der(int v){
          super(v);
        derVar=v;
        System.out.println("Derived class parameterized constructor");
      }
      public void display(){
        System.out.println("Base variable value="+baseVar);
        System.out.println("Derived variable value="+derVar);
      }
      public void useOfSuper(){
        var=15;
        var=20;
        System.out.println("Base variable var=" + 
                       super.var);
        System.out.println("Derived variable var="+var);
      }
  }
  class abc{
      public static void main(String args[]){
        Der Derobj=new Der(10);
        Derobj.display();
        Derobj.useOfSuper();
      }
  }
  </code></pre>