BinaryNode.java

public class BinaryNode {
  
    String character;
    int data;
    BinaryNode left, right;
    
    BinaryNode(int d) {
        data = d;
        left = right = null;
    }
 
    BinaryNode(String s, int d) {
    	character = s;
        data = d;
        left = right = null;
    }
}