Which of the following methods belong to the String class?
length()
compareTo()
substring()
all of the them
Correct Answer :
D. all of the them
Related Questions
Java is fully object oriented programme.
true
false
JdbcOdbcDriver is an object of Object class
True
False
In a single Servlet class we can use____________
doGet(...) method only
doPost(...) method only
doGet(...) method and doPost(...) method both at a time.
Either 'a' or 'b'
A method declared as static can not access non-static class members.
True
False
Declarations can appear anywhere in the body of a Java method.
True
False
If m and n are int type variables, what will be the result of the expression
'm % n' when m = -14 and n = -3?
4
2
-2
-4
Which of the following methods can be used to change the size of a
size() *
resize()
component
dimension()
setSize()
size()
Servlet has ___________
init method
doGet(------) method
All of the above methods.
It is an error if a class with one or more abstract methods is not explicitly declared abstract.
True
False
It is perfectly legal to assign a subclass object to a supper class reference.
True
False
The keywords reserved but not used in the initial version of Java re:
Synchronized
Boolean
union
goto
An individual array element that is passed to a method and modified in that method will contain the modified value when the called method completes execution.
True
False
In order to connect to a database through java program we must create _______-
Connection, Statement, ResultSet
Connection, ResultSet
Statement< ResultSet
Connection, Statement
An EJB is a server-side component that encapsulates the business logic of an application
True
False
A string object can not be modified after it is created.
True
False
The use of protected keyword to a member in a class will restrict its visibility as follows:
Visibility only in the class and its subclasses in the same package.
Visibility only inside the same package.
Visibility in all classes in the same package and subclasses in other packages.
Visibility only in the class where it is declared.
What is java -g used for?
Using the jdb tool
Executing a class with optimization turned off
To provided information about deprecated methods
Non of the above
Declaring a method synchronized guarantees that the deadlock cannot occur.
True
False
class.forName(...) creates an instance of java ODBC driver
True
False
A Java monitor must either extend thread class or implement Runnable interface.
True
False
A catch can have comma-separated multiple arguments.
True
False
Every method of a final in class is implicitly final.
True
False
Which of the following represent legal flow control statements?
break;
break();
continue(inner);
all of the above
Which of the following are keywords?
integer
default
Boolean
Object
JSP files creates ________________
html files
html files and java files
java files and class files
None of the above.
With javadoc, which of the following denotes a javadoc comment?
//#
/*
/**
//**
Message-Driven beans act as a listener for the Java Message Service API, processing messages synchronously
True
False
Java always provides a default constructor to a class.
True
False
The check box group class is a subclass of the component class.
True
False
We can over load methods with differences only in their return type.
True
False