Question

I was building a class using play framework 1.2.x .

I have a Controller class which contains a non-anonymous(named) private inner class.

When I try to access one of the public fields of the inner class via its constructor I get the following error

The above code

private static class FinancialTransactionJSONPacket implements JSONPacket{
    public final boolean isSuccess;
    public final List<FinancialTransaction> financialTransactions;
    public final  OPERATIONS operation;

    public FinancialTransactionJSONPacket(boolean isSuccess,FinancialTransaction financialTransaction,OPERATIONS operation) {           
        this(isSuccess,new ArrayList<FinancialTransaction>(),operation);
/* Line 43 */   this.financialTransactions.add(financialTransaction);           
    }
}

I don’t get the Logic , how is this even possible ? I am accessing an attribute of a class from within its constructor how do access specifiers matter ?

I tried searching and found this article but it relates to anonymous Inner Classes, and the solution proposed is to make the anonymous inner class as a named class.

Declarations

• public final List<FinancialTransaction> financialTransactions;
• private static class FinancialTransactionJSONPacket

Answer 1

The static class is private, so only the enclosing class can access its members, whether they are public or not.

I can’t see any evidence in your illegible graphic that the access is happening within the static class’s own constructor. It looks when I peer at it more like an external class is trying to access the class’s innards.

NB This is not an inner class, because it is static.