What is thread synchronization in java?
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there are some duplicate values in ArrayList, how U'll get that array with out duplicate?
Why do we need hashmap in java?
How do you add an element to a set in java?
What is left shift and right shift?
What is sortedmap interface?
What are the important features of Java 11 release?
What is the difference between dom and sax parser in java?
How does split work in java?
Same common question what is Map,Set,HashMap,List????
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 life cycle of jsp?
String is mutable or immutable?