KeyBank - Core java Crossword

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Across
  1. 3. The method toString() is a public member of the class_______
  2. 6. Design pattern that restricts the instantiation of a class to one object.
  3. 8. An Interface that extends Serializable Interface
  4. 10. Creator of JAVA.
  5. 11. A Collection which is synchronized by nature?
Down
  1. 1. A class level variable can't be declared inside a method.
  2. 2. A keyword used to display all the steps in JAVA Compilation.
  3. 4. An implementation used to insert elements at any position in the collection?
  4. 5. Treeset maintains which order
  5. 7. Data structure that a Set uses to store its elements?
  6. 9. A keyword used to invoke a constructor of the same class