JAVA FANTASTIC PROGRAM

Check if a particular key exists in Java Tree Map

import java.util.TreeMap;

public class CheckKeyOfTreeMapExample

{

public static void main(String[] args)

{

TreeMap treeMap = new TreeMap();

treeMap.put("1","One");

treeMap.put("2","Two");

treeMap.put("3","Three");

boolean blnExists = treeMap.containsKey("1");

System.out.println("1 exists in TreeMap ? : " + blnExists);

   }

}

Check if a particular value exists in Java Tree Map

import java.util.TreeMap;

public class CheckValueOfTreeMapExample

{

public static void main(String[] args)

{

TreeMap treeMap = new TreeMap();

treeMap.put("1","One");

treeMap.put("2","Two");

treeMap.put("3","Three");

boolean blnExists = treeMap.containsValue("Three");

System.out.println("Three exists in TreeMap ? : " + blnExists);

    }

}

Get Head Map from Java Tree Map

import java.util.SortedMap;

import java.util.TreeMap;

public class GetHeadMapFromTreeMapExample

{

 public static void main(String[] args)

{

TreeMap treeMap = new TreeMap();

treeMap.put("1","One");

treeMap.put("3","Three");

treeMap.put("2","Two");

treeMap.put("5","Five");

treeMap.put("4","Four");

SortedMap sortedMap = treeMap.headMap("3");

System.out.println("Head Map Contains : " + sortedMap);

   }

}

Get Set view of Keys from Java Tree Map

import java.util.Iterator;

import java.util.TreeMap;

import java.util.Set;

public class GetSetViewOfKeysFromTreeMapExample

          {

public static void main(String[] args)

{

TreeMap treeMap = new TreeMap();

treeMap.put("1","One");

treeMap.put("3","Three");

treeMap.put("2","Two");

Set st = treeMap.keySet();

  

System.out.println("Set created from TreeMap Keys contains :");

Iterator itr = st.iterator();

while(itr.hasNext())

System.out.println(itr.next());

st.remove("1");

boolean blnExists = treeMap.containsKey("1");

System.out.println("Does TreeMap contain 1 ? " + blnExists);

   }

}

Get Size of Java Tree Map

import java.util.TreeMap;

public class GetSizeOfTreeMapExample

{

public static void main(String[] args)

{

TreeMap treeMap = new TreeMap();System.out.println("Size of TreeMap : " + treeMap.size());

treeMap.put("1","One");

treeMap.put("2","Two");

treeMap.put("3","Three");

System.out.println("Size of TreeMap after addition : " + treeMap.size());

Object obj = treeMap.remove("2");

System.out.println("Size of TreeMap after removal : " + treeMap.size());

   }

}

Get Sub Map from Java Tree Map

import java.util.TreeMap;

import java.util.SortedMap;

public class GetSubMapFromTreeMapExample

{

public static void main(String[] args)

{

TreeMap treeMap = new TreeMap();

treeMap.put("1","One");

treeMap.put("3","Three");

treeMap.put("2","Two");

treeMap.put("5","Five");

treeMap.put("4","Four");

SortedMap sortedMap = treeMap.subMap("2","5");

System.out.println("SortedMap Contains : " + sortedMap);

   }

}

Get Tail Map from Java Tree Map example

import java.util.SortedMap;

import java.util.TreeMap;

public class GetTailMapFromTreeMapExample

{

public static void main(String[] args)

{

TreeMap treeMap = new TreeMap();

treeMap.put("1","One");

treeMap.put("3","Three");

treeMap.put("2","Two");

treeMap.put("5","Five");

treeMap.put("4","Four");

   }

}

Get lowest and highest key stored in Java Tree Map example

import java.util.TreeMap;

public class GetLowestHighestKeyTreeMapExample

 {

public static void main(String[] args)

{

TreeMap treeMap = new TreeMap();

treeMap.put("1","One");

treeMap.put("3","Three");

treeMap.put("2","Two");

treeMap.put("5","Five");

treeMap.put("4","Four");

   }

}

Iterate through the values of Java Tree Map example

import java.util.Collection;

import java.util.TreeMap;

import java.util.Iterator;

public class IterateValuesOfTreeMapExample

{

public static void main(String[] args)

{

TreeMap treeMap = new TreeMap();

treeMap.put("1","One");

treeMap.put("2","Two");

treeMap.put("3","Three");

Collection c = treeMap.values();

Iterator itr = c.iterator();

while(itr.hasNext())

System.out.println(itr.next());

   }

}

Remove all values from Java Tree Map example

import java.util.TreeMap;

public class EmptyTreeMapExample

{

public static void main(String[] args)

{

TreeMap treeMap = new TreeMap();

treeMap.put("1","One");

treeMap.put("2","Two");

treeMap.put("3","Three");

treeMap.clear();

System.out.println("Total key value pairs in TreeMap are : " + treeMap.size());

   }

}

Remove value from Java Tree Map example

import java.util.TreeMap;

public class RemoveValueFromTreeMapExample

{

public static void main(String[] args)

{

TreeMap treeMap = new TreeMap();

treeMap.put("1","One");

treeMap.put("2","Two");

treeMap.put("3","Three");

Object obj = treeMap.remove("2");

System.out.println(obj + " Removed from TreeMap");

   }

}