Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 1 year ago. Improve this question How do i merge two object lists in java for eg: i have 2 lists listA listB with one object each like listA[name=abc,age=56, weight=null] listB[name=Null,age=Null,weight=70]