TreeMap lowerKey(K key) method in java code example
Example 1: TreeMap lowerKey(K key) method in java
example on TreeMap lowerKey(K key) method for NullPointerException
import java.util.TreeMap;
public class TreeMapLowerKeyMethodExample
{
public static void main(String[] args)
{
TreeMap<Integer, String> tm = new TreeMap<Integer, String>();
tm.put(8, "mango");
tm.put(5, "apple");
tm.put(3, "watermelon");
tm.put(7, "pineapple");
tm.put(6, "orange");
tm.put(9, "grapes");
System.out.println("TreeMap: " + tm.toString());
try
{
System.out.println(tm.lowerKey(null));
}
catch(Exception ex)
{
System.out.println("Exception: " + ex);
}
}
}
Example 2: TreeMap lowerEntry(K key) method in java
import java.util.TreeMap;
public class TreeMapLowerEntryMethodExample
{
public static void main(String[] args)
{
TreeMap<Integer, String> tm = new TreeMap<Integer, String>();
tm.put(7, "red");
tm.put(3, "green");
tm.put(6, "violet");
tm.put(5, "blue");
tm.put(4, "yellow");
System.out.println("Check lower entry in given TreeMap");
System.out.println("Value is: "+ tm.lowerEntry(5));
}
}
Example 3: TreeMap lowerKey(K key) method in java
import java.util.TreeMap;
public class TreeMapLowerKeyMethodExample
{
public static void main(String[] args)
{
TreeMap<Integer, String> tm = new TreeMap<Integer, String>();
tm.put(8, "mango");
tm.put(5, "apple");
tm.put(3, "watermelon");
tm.put(7, "pineapple");
tm.put(6, "orange");
tm.put(9, "grapes");
System.out.println("TreeMap: " + tm.toString());
System.out.print("Lower Key Entry of Element 10 is: ");
System.out.println(tm.lowerKey(10));
System.out.print("Lower Key Entry of Element 5 is: ");
System.out.println(tm.lowerKey(5));
}
}