'(' or '[' Expected

Question

When trying to compile my program, the following error occurs.

'(' or '[' Expected.

 public AccountArrayList()
{
    // line one below is the hi-lighted code
    ArrayList accounts = new ArrayList;
    accounts.add("1");
    accounts.add("1");
    accounts.add("1");
    accounts.add("1");
    accounts.add("1");
    accounts.add("1");
    accounts.add("1");
    accounts.add("1");
    accounts.add(5,"900");
}

Thank.

Answer 1

There is no bracket in the constructor:

ArrayList accounts = new ArrayList();

Answer 2

Your constructor is wrong. It should be:

ArrayList accounts = new ArrayList();

Answer 3

Java 5 , , ArrayList generics.

:

ArrayList<String> accounts = new ArrayList<String>();

Answer 4

, ArrayList, .

new ArrayList()

Answer 5

,

ArrayList accounts = new ArrayList();

In addition, it would be useful for you to specify it like this:

ArrayList<String> accounts = new ArrayList<String>();

Because then the compiler will stop you from adding integers to it (for example), not strings.