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Answer:  This exception is very common in java and occurs whenever any operation is performed on un-initialized variable or object. For example you are performing a get operation on a value or reference which is not alive or does not exist. So perform a null check for the instance on which you are going to perform an operation, like reference is not null and empty in some cases. Also counting in java starts from 0 so if the number of items in array are 5 then the counting of the index will start from 0.The counter will go like 0,1,2,3,4  i.e. for 5 elements its value will start from 0 and end at 4.
the 0th index will be point to the first item and hence 1th index to the second element and so on.
Thus if an array is to be traversed through a loop then the index shall be compared using the < operator with the length of the array.

Answer: This exception occurs when the class is not initialized properly and it can not be invoked.So check class file is not corrupt or loaded with the latest version of it

Answer: This exception occurs when you are accessing the method which does not exist in the class. So verify the method you are accessing, does it have the same signature as you are invoking.

Answer: This exception occurs when you are trying to cast a class into another which are not related or their type does not match each other. Generally classes are cast to the parent class or into the similar object of the parent or same class.

Answer: This exception occurs when you are trying to load a class which is not there at the path or classpath from where you are loading it.

Answer: This exception is thrown when you are trying to load a file resource which does not exist at the location. So keep the file there and check whether the name mentioned by you in the code is same as the name of the fil

Answer: Counting in java starts from 0 so if the number of items in array are 5 then the counting of the index will start from 0.Hence the 0th index will be point to the first item and 1th index to the second element and so on. So perform any operation on the element which is fetched with < the length of the data structure.

Answer: This exception occurs when you return any value from the method for which you have not defined the data type of the returned value. So you need to be very careful while defining the signature and return type of the method and check whether you want to return a primitive, string, array or any other object.

Answer: This exception occurs when you return any value from the method for which you have defined the return argument in method signature but forgot to return the same from method definition.

Answer: This exception occurs when you return any value from the method from which return value is expected but not yet returned.

Answer: This exception occurs when we miss the closing curly brace “}”. Most of the times it is missing at the end of the code.

Answer: This exception occurs when you put return statement in mid of a method definition leaving the rest of the statements after the return keyword as unreachable.

Answer: This exception occurs when you return any value from the method for which you have defined as void, so change the void to the return type of your method.

Answer:Declare the variable as static in the signature.

Answer: To call a non-static method from a static method is to declare an instance of the class calling the non-static method.

Answer: Counting in java starts from 0 so if the number of items in array are 5 then the counting of the index will start from 0. The 0th index will be point to the first item and hence 1th index to the second element and so forth.
Thus if an array is to be traversed through a loop then the index shall be compared using the < operator with the length of the array.

Answer: Counting in java starts from 0 so if the number of items in array are 5 then the counting of the index will start from 0.In the string array the 0th index will be point to the first string item and 1th index to the second element and so forth. Thus if an array is to be traversed through a loop then the index shall be compared using the < operator with the length of the array

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