How can we run a java program without making any object?
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Why can't we use static class instead of singleton?
Explain notifyall() method of object class ?
What is visibility mode?
Is there any way to skip finally block of exception even if some exception occurs in the exception block?
What is the same as procedures?
Give me an example of array and linked list? Where they can be used?
What is keyword and identifier?
What is the difference between scrollbar and scrollpane?
What is a package?
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
Explain the difference between comparator and comparable in java?
How do you clear an arraylist in java?