what is the main usage of an abstract keyword?please follow the program class A { void display() { System.out.println("hai"); } void print() { } } class B extends A { void print() { System.out.println("Hello"); } } In this program i was gives the implementation of print() according to my requirements in subclass.And there is no definition in superclass then why we can use abstract keyword before a method that i want to gives definition in other classes,is any mistakes in the above usage of method?
Difference between isblank and isnull?
Tell me how comfortable are you with data analysis? : insurance sales
Explain enumerator?
what is the reson in a/c system that TPN TRIPPING
What is upsert and how external id are beneficial? : salesforce Data Management
Explain ng-show directive?
Why dns server is required for active directory?
What are the limitations of microsoft access?
A transport is imported into QAS in 2 min. time the same transport when imported into PRD is taking more than 20 min. why? What to do?
What are the advantages of embedded style sheets?
How are error messages created and handled in webdynpro?
Is there a quick rule-of-thumb to estimate a gas side heat-transfer rate inside the tubes of a shell and tube heat exchanger?
What is the difference between Direct and Indirect Taxes?Give examples?
Describe resource planning during the estimation of software project.