Check if a particular key exists in TreeMap in Java
Description
The following code shows how to check if a particular key exists in TreeMap.
Example
// w w w .j a v a 2 s . c o m
import java.util.TreeMap;
public class Main {
public static void main(String[] args) {
TreeMap<String, String> treeMap = new TreeMap<String,String>();
treeMap.put("1", "One");
treeMap.put("2", "Two");
treeMap.put("3", "Three");
System.out.println(treeMap.containsKey("1"));
}
}
The code above generates the following result.