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Java Interview Questions

These are some Java interview questions. More questions will be added every week or so.


  • Java Interview Question: In Java, You can create a String object as below...

  • Java Interview QuestionWhat is the purpose of garbage collection in Java, and when is it used?...

  • Java Interview Question: Describe synchronization in respect to multithreading....

  • Java Interview Question: What is HashMap and Map?...

  • Java Interview Question: What is an Iterator?...

  • Java Interview Question: What is final?...

  • Data Structures: Teddy Bears Puzzle: the game starts when I give you some bears. You can then give back some bears...

  • Data Structures: binary search of the arrayImplement the body of the following function using a binary search of the array... 
  • Data Structures: JAVA: Suppose that I have the following declarations...

  • Data Structures: JAVA: What are the steps to inserting a new item at the head...

  • What is the difference between an Interface and an Abstract class?



  • Explain different ways of using thread?




  • What are pass by reference and pass by value? 


  • What is the difference between swing and Awt?



  • What is an Iterator? 


  • What does happen if the main method is declared as private?