«interface»ArrayToMap+convert(array: Object[]) : MapArrayToMapImpl- map: Map+convert(array: Object[]) : Map 类图说明: ArrayToMap是一个接口,定义了将数组转换成Map的方法。 ArrayToMapImpl是ArrayToMap接口的实现类,实现了将数组转换成Map的方法。 map是ArrayToMapImpl类中的私有成员变量,用于存储转...
importjava.util.HashMap;importjava.util.Map;publicclassArrayToMapExample{publicstaticvoidmain(String[]args){String[]array={"a","1","b","2","c","3"};Map<String,String>resultMap=convertArrayToMap(array);// 打印结果System.out.println(resultMap);}publicstaticMap<String,String>convertArrayToMap(...
在这个示例中,convertMapKeysToArray方法接受一个Map对象作为参数,并返回包含Map所有键的字符串数组。主方法中演示了如何使用这个方法,并打印出转换后的数组元素。
Collection<Integer>values=map.values();IntegervalArray[]=values.toArray(newInteger[0]); Similarly, we cancollect the Map keys into an array.Map.keyset()returns theSetof all the keys in aMap. UsingSet.toArray()we can convert it to an array of Strings. StringkeyArray[]=map.keySet().toA...
* this map will be empty. * *@parambean the bean for this map to operate on */publicBeanMap(finalObject bean){this.bean = bean; initialise(); } 关键代码: privatevoidinitialise(){if(getBean() ==null) {return; }finalClass<?extendsObject> beanClass = getBean().getClass();try{//Be...
Java 8 – Convert List to Map package com.mkyong.java8 public class Hosting { private int Id; private String name; private long websites; public Hosting(int id, String name, long websites) { Id = id; this.name = name; this.websites = websites; ...
Example 1: Convert Map to List import java.util.*; public class MapList { public static void main(String[] args) { Map<Integer, String> map = new HashMap<>(); map.put(1, "a"); map.put(2, "b"); map.put(3, "c"); map.put(4, "d"); map.put(5, "e"); List<Integer...
有些业务场景下需要将 Java Bean 转成 Map 再使用。 本以为很简单场景,但是坑很多。 二、那些坑 2.0 测试对象 import lombok.Data; import java.util.Date; @Data public class MockObject extends MockParent{ private Integer aInteger; private Long aLong; ...
为了满足项目的参数传递,需要将实体对象转成map以满足业务需求,下面是实体对象转map的工具类。 ObjectToMap.java 代码语言:javascript 代码运行次数:0 importjava.util.Map;importjava.util.HashMap;importjava.lang.reflect.Field;publicclassObjectToMap{publicstaticMap<String,String>convert(Object object)throws Excepti...
{ map<integer, animal> map = convertlistservice.convertlistafterjava8(list); assertthat( map.values(), containsinanyorder(list.toarray())); } 5. using the guava library besides core java, we can use third-party libraries for the conversion. 5.1. maven configuration first, we need to ...