WHY THERE IS NO MULTIPLE INHERITENSE IN JAVA
if multiple inheritence exists then the object of one class must get the properties from more than one objects
if other two objects contains same function with respect to name , parameters and return type
then the JVM cannot understand this function belongs to which object from
getting the properties then it causes to serious problem
this is the reson y multiple inheritence are not exist in java
what is the use of destroy method and its return type in the context of JAVA Servlet
destroy method is used cleanup resources or you can say deallocation of resources
What is meant by mutating table error in Oracle
Mutating table error is the a condition when a trigger is trying to update a row it is currently using.
To fix this issue use views or temp tables so that selection can be done form one and update can be done on other.
What is declaration scripting element in JSP pages
A declartion scripting element in JSP page
is used to declare varables or methods in scripting language
<body>
<%! int abc = 0; %>
</body>
Can we call a stored procedure from another stored procedure in Oracle
Yes . Use exec Procedure name to call a procedure from another procedure.
What method is called each time a servlet is invoked
service() method is called each time a servlet is invoked
What is a package in java
A package is a collection of classes and interfaces which provides access protection and name space management.
A package is a collection of classes and interfaces which provides access protection and name space management.
What is Oracle Database
Oracle is a program which maintains data for us and decides where it should go on the hard drive.In other words Oracle is a relational Database i.e. a collection of Data.
what is the use of getServletConfig method and its return type in the context of JAVA Servlet
getServletInfo() is used to get used to get servletConfig object
its return type is ServletConfig object
getServletInfo() is used to get used to get servletConfig object
its return type is ServletConfig object
its return type is ServletConfig object
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