java.util.concurrent 之ConcurrentNavigableMap

待我称王封你为后i 2022-06-11 23:42 215阅读 0赞

package com.jcg;
    
    import java.util.concurrent.ConcurrentNavigableMap;
    import java.util.concurrent.ConcurrentSkipListMap;
    
    /**
     * @author ashraf
     *
     */
    public class ConcurrentNavigableMapDemo {
    
    	public static void main(String[] args) {
    
    		System.out.println("Example of ConcurrentNavigableMap:\n");
    
    		ConcurrentNavigableMap navmap = new ConcurrentSkipListMap();
    
    		navmap.put(1, "Sunday");
    
    		navmap.put(2, "Monday");
    
    		navmap.put(3, "Tuesday");
    
    		navmap.put(4, "Wednesday");
    
    		navmap.put(5, "Thursday");
    
    		navmap.put(6, "Friday");
    
    		navmap.put(7, "Saturday");
    
    		System.out.println("1. descendingKeySet(): "
    				+ navmap.descendingKeySet() + "\n");
    
    		System.out.println("2. descendingMap(): " + navmap.descendingMap()
    				+ "\n");
    
    		System.out.println("3. headMap(K toKey): " + navmap.headMap(3) + "\n");
    
    		System.out.println("4. headMap(K toKey, boolean inclusive): "
    				+ navmap.headMap(3, true) + "\n");
    
    		System.out.println("5. keySet(): " + navmap.keySet() + "\n");
    
    		System.out.println("6. navigableKeySet(): " + navmap.navigableKeySet()
    				+ "\n");
    
    		System.out
    				.println("7. subMap(K fromKey, boolean fromInclusive, K toKey, boolean toInclusive): "
    						+ navmap.subMap(3, true, 6, true) + "\n");
    
    		System.out.println("8. subMap(K fromKey, K toKey): "
    				+ navmap.subMap(3, 6) + "\n");
    
    		System.out
    				.println("9. tailMap(K fromKey): " + navmap.tailMap(3) + "\n");
    
    		System.out.println("10. tailMap(K fromKey, boolean inclusive): "
    				+ navmap.tailMap(3, true) + "\n");
    	}
    
    }