【Java开源代码栏目提醒】:网学会员为广大网友收集整理了,TestTreeMap.java,希望对大家有所帮助!
package com.hbp.chapter5.map.test;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;
import java.util.SortedMap;
import java.util.TreeMap;
public class TestTreeMap {
/**
* @param args
*/
public static void main(String[] args) {
testTreeMapOrder();
}
static void testTreeMapOrder(){
Map map = new TreeMap();
map.put("1", "A");
map.put("3", "C");
map.put(new Integer(4), "D");
map.put("2", "B");
map.put("5", "E");
Collection values = map.values();
for (Iterator iter = values.iterator(); iter.hasNext();) {
String value = (String) iter.next();
System.out.println(value);
}
}
static void testTreeMapNewMethod(){
SortedMap map = new TreeMap();
map.put("1", "A");
map.put("3", "C");
map.put("4", "D");
map.put("2", "B");
map.put("5", "E");
System.out.println("firstKey:"+map.firstKey());
System.out.println("firstKey:"+map.lastKey());
System.out.println("headMap:"+map.headMap("3"));
System.out.println("tailMap:"+map.tailMap("4"));
}
}
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