java中merge的用法

public static <t> List<t> merge(SortedMap<t double> a, SortedMap<t double> b)</t></t></t></t>

import java.util.*;

public class MergeExample {

    public static void main(String[] args) {
        // 建立2个未排序的调集
        SortedMap<integer double> map1 = new TreeMap();
        map1.put(1, 0.5);
        map1.put(3, 0.7);
        map1.put(5, 0.9);

        SortedMap<integer double> map两 = new TreeMap();
        map两.put(两, 0.6);
        map两.put(4, 0.8);

        // 归并2个调集
        SortedMap<integer double> mergedMap = Collections.merge(map1, map二, (a, b) -&gt; a + b);

        // 挨印归并后的召集
        System.out.println(mergedMap);
    }
}</integer></integer></integer>

{1=0.5, 两=0.6, 3=0.7, 4=0.8, 5=0.9}