Given the Visitor interface discussed in section 17.4 (shown below), select a statement to complete the class CodeFinder. The class is to be used when traversing a binary tree while displaying every data value that contains the code "007". public interface Visitor
{
Void visit(Object data);
}
Class CodeFinder implements Visitor
{
Public void visit(Object data)
{
If (______________________________)
{
System.out.println(data);
}
}
}
A) data.toString().indexOf("007") = 0
B) data.toString().indexOf("007") 0
C) data.equals("007")
D) data.toString().contains("007")

Question

Given the Visitor interface discussed in section 17.4 (shown below), select a statement to complete the class CodeFinder. The class is to be used when traversing a binary tree while displaying every data value that contains the code "007". public interface Visitor
{
Void visit(Object data);
}
Class CodeFinder implements Visitor
{
Public void visit(Object data)
{
If (______________________________)
{
System.out.println(data);
}
}
}
A) data.toString().indexOf("007") >= 0
B) data.toString().indexOf("007") > 0
C) data.equals("007")
D) data.toString().contains("007")

Quizplus · Accepted Answer

data.toString().indexOf("007") >= 0 checks if the string representation of the data object contains the substring "007" at any position. If it does, the data value is printed.

Given the Visitor Interface Discussed in Section 17