public class BuggyBread1{ public static void main (String args[]) { Set<String> mySet = new TreeSet<String>(); mySet.add(""1""); mySet.add(""2""); mySet.add(""111""); for(String d: mySet){ System.out.println(d); } } }

Java - Interview Questions and Answers

Q1. public class BuggyBread1{

public static void main (String args[]) {
Set<String> mySet = new TreeSet<String>();
mySet.add(""1"");
mySet.add(""2"");
mySet.add(""111"");
for(String d: mySet){
System.out.println(d);
}
}
}

Core Java

^{Admin
info@buggybread.com}

Ans. 1
111
2

TreeSet maintains the elements in the ascending order which is identified by the compareTo method. compareTo method in String has been defined such that it results in the natural alphabetic Order. Here the elements in the TreeSet are of String and not of Integer. In String Natural Order, 111 comes before 2 as ascii of 1st character first determines the order.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve java code coding set treeset string integer}