How do you test a method for an exception using junit?

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You're given a Boolean 2D matrix, can you find the number of islands?

0 Answers   Amazon,

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There can be a abstract class without abstract methods, but what is the need to declare a class abstract if it doesn't contain abstract methods?

5 Answers   HCL,

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String is mutable or immutable?

3 Answers  

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How can we avoid including a header more than once?

0 Answers   Fidelity,

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What is the purpose of final keyword and when to use it?

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What is a method ?

6 Answers  

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Name the methods in mouse listeners ?

4 Answers  

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Write a java program to find the route that connects between Red and Green Cells. General Rules for traversal 1. You can traverse from one cell to another vertically, horizontally or diagonally. 2. You cannot traverse through Black cells. 3. There should be only one Red and Green cell and at least one of each should be present. Otherwise the array is invalid. 4. You cannot revisit a cell that you have already traversed. 5. The maze need not be in the same as given in the above example

0 Answers  

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What is the preferred size of a component in java programming?

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FOR EXAMPLE WE R HAVING TWO LIST ELEMENTS ..BOTH LISTS CONTAINS ID,NAME,PLACE ..I NEED TO COMPARE BOTH IDS IN TWO LISTS,IF ID'S R SAME MEANS WE HAVE ADD THE DETAILS(LIKE NAME,PLACE) TO MAP...HOW IS POSSIBLE ?CAN ANY ONE SUGGEST?

1 Answers  

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What is a null check?

0 Answers  

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