What is difference between array and arraylist in java?
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Can java inner class be static?
Explain the use of sublass in a java program?
What is consumer in java?
What is internal iteration in java se 8?
How do you achieve polymorphism in java?
Can substring create new object?
What is meant by method overriding?
Explain the difference between private, public, package and protected in java?
how a programmer confirms that the data submitted has been succesfully inserted into the database(either oracle or my sql).. How a programmer confirm if there is any problem with the program he wrote for insertion... ANS:--- >executeupdate method is having boolean return type, if anything goes wrong in data insertion or data updation, it would return false. otherwise, if it successfully inserts data into the database, it would return true NOW HOW TO I CHECK IN MY DURING EXECUTION WHETHER IT RETURNS TRUE OR FALSE... WELL IT WILL DISPLAY ANY MESSAGE OR NOT
what is the default value of a variable char?(If not assigned)
What are different types of classloaders?
How can we handle runtime exceptions? write one sample program? Can we write runtime exceptions beside the throws key word? if yes write sample program?