java - Strange map behavior in Android application -

i have strange problem map used in application.

i have list of objects - table. each object has field map of objects of class:

public class table {      private map<integer, myobject> objectsmap = new hashmap<integer, myobject>();      public void addtomap(int i, myobject morder)     {         objectsmap.put(i, morder);     }      public myobject getobject(int poz)     {         return objectsmap.get(poz);     }  }  public class myobject {      private int info1;     private int info2;      public void setinfo(int i1, int i2)     {         this.info1 = i1;         this.info2 = i2;     }      public int[] getinfos()     {         return new int[]{this.info1, this.info2};     }  } 

then in main activity have initialization:

private list<table> tablelist = new arraylist<table>();  //...  public void inittableobject(table mytable) {     myobject newobject = new myobject();     newobject.setinfo(1,2);     mytable.addtomap(1, newobject);     myobject newobject = new myobject();     newobject.setinfo(3,4);     mytable.addtomap(2, newobject);     myobject newobject = new myobject();     newobject.setinfo(5,6);     mytable.addtomap(3, newobject);     myobject newobject = new myobject();     newobject.setinfo(7,8);     mytable.addtomap(4, newobject); } 

the problem when want check values:

for (table table : tablelist) {     int[] info = table.getobject(4).getinfos();     log.d("tag","4: {" + info[0] + ", " + info[1] + "}"); } 

when i've got 1 table object ok. problem begins when have 2 or more objects. in case 2 elements after interactions (not important in case) have problem.

each time, last object map of objects - newobject number 4 on first table object has value equal 1st object value of 2 element. second table object , myobject objects ok.

i trying everything, , don't see else why asking here.

can tell me going on here getting error?

i have been checking it, , works me. problem not way table defined (the code shown), in way you're using it. you're modifying instance of myobject after add first table.