Question

Hello i write followed code to iterate a list of nodes

public class RootImpl {

    private List nodes = new ArrayList<String>();

    public void processData(Object object) {

        for (String node : nodes){

        }
    }
}

And this code won’t compile and give me errors in line: for (String node : nodes)

java: incompatible types
required: java.lang.String
found: java.lang.Object

is this code is wrong?

Answer 1

You must define the variable with the appropiate types:

  private List<String> nodes = new ArrayList<String>();

The compiler is not able to see that nodes has been assigned an ArrayList<String>, so it interprets it as a generic List<Object> and issues such an error.