Get Set view of Keys from Java LinkedHashMap : LinkedHashMap « Collections « Java Tutorial






import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.Set;

public class Main {
  public static void main(String[] args) {
    LinkedHashMap<String,String> lHashMap = new LinkedHashMap<String,String>();

    lHashMap.put("1", "One");
    lHashMap.put("2", "Two");
    lHashMap.put("3", "Three");

    Set st = lHashMap.keySet();

    Iterator itr = st.iterator();

    while (itr.hasNext()){
      System.out.println(itr.next());
    }
    st.remove("2");

    boolean blnExists = lHashMap.containsKey("2");
    System.out.println(blnExists);
  }
}
/*
1
2
3
false
*/








9.27.LinkedHashMap
9.27.1.What you can do with a LinkedHashMap.
9.27.2.Get Size of Java LinkedHashMap
9.27.3.Get Set view of Keys from Java LinkedHashMap
9.27.4.Iterate through the values of Java LinkedHashMap
9.27.5.Check if a particular element exists in Java LinkedHashSet
9.27.6.Check if a particular key exists in Java LinkedHashMap example
9.27.7.Check if a particular value exists in Java LinkedHashMap example
9.27.8.Copy all elements of Java LinkedHashSet to an Object Array
9.27.9.Remove all values from Java LinkedHashMap
9.27.10.Remove value from Java LinkedHashMap
9.27.11.A Least Recently Used Cache