What is difference between arraylist and list in java?

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Hi Friends, can u give code to convert ArrayList to HashMap and HashMap to ArrayList.

1 Answers  

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In Java why we write public static void main(String args[]) why not main()?

46 Answers   Aptech, GE Healthcare, Infosys, Microsoft, New Horizon, Practical Viva Questions, TCS, Wipro,

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What is set in java?

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What is null object in java?

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What is listnode in java?

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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

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Map map = new HashMap(2); map.add(“1”,”one”); map.add(“2”,”two”); map.add(“3”,”three”); What will happen at this line?

5 Answers   Rolta,

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Name the methods in mouse listeners ?

4 Answers  

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program to find 25 square = 625 here the 625 of last two digits is equal to 25, i don't know excatly what this type of number is called

1 Answers   Huawei,

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What are the types of casting?

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What’s meant by anonymous class?

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