java - how to inject mock without using @injectmocks -

i have following class

public class 1 {     private map<string, string> nodes = new hashmap<string, string>();      public void addnode(string node, string nodefield){         this.nodes.put(node, nodefield);     } } 

i want write test class test addnode method , have following:

@runwith(mockitojunitrunner.class) public class onetest {     @injectmocks     private 1 one = new one();      @mock     map<string, string> nodes;      @test     public void testaddnode(){         one.addnode("mocknode", "mocknodefield");         mockito.verify(nodes).put("mocknode","mocknodefield");     } } 

which works. wondering if there way without using @injectmocks following

public class onetest {      private 1 one;      @test     public void testaddnode(){         map<string, string> nodes = mockito.mock(map.class);          1 = mockito.injectmocks(one.class, nodes); // or whatever equivalent methods          one.addnode("mocknode", "mocknodefield");         mockito.verify(nodes).put("mocknode","mocknodefield");     } } 

how change class injecting map dependency? makes easier test , gives added benefit of being able use implementation of map interface, example:

  public class 1 {      private map<string, string> nodes;      public one(map<string, string> nodes) {          this.nodes = nodes;      }      public void addnode(string node, string nodefield){          this.nodes.put(node, nodefield);      } } 

then test:

map mockmap = mockito.mock(map.class);  1 one = new one(mockmap);  one.addnode("mocknode", "mocknodefield");  mockito.verify(mockmap).put("mocknode","mocknodefield");