When we implement an interface method, it should be declared as public.
True
False
Correct Answer :
A. True
Related Questions
If you want to assign a value of 99 to the variable year, then which of the following lines can be used within an <applet> tags?
number=getParameter(99)
<number==99>
<param = radius value ==99>
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
Given the code
String s = new String("abc");
Which of the following calls are valid?
s.toUpperCase()
s.append("xyz")
s.setCharAt(1<'A')
all of the above
When present, package must be the first no comment statement in the file.
True
False
Message-Driven beans act as a listener for the Java Message Service API, processing messages synchronously
True
False
The keywords reserved but not used in the initial version of Java re:
Synchronized
Boolean
union
goto
JdbcOdbcDriver is an object of Object class
True
False
We can add more than one class(es) at the time of compilation Java Beans.
True.
False.
The default case is always required in the switch selection structure.
True
False
With javadoc, which of the following denotes a javadoc comment?
//#
/*
/**
//**
A method declared as static can not access non-static class members.
True
False
Which of the following methods belong to the String class?
length()
compareTo()
substring()
all of the them
Two methods cannot have the same name in Java.
True
False
When X is a positive number the operations x>> 2 and x>>>2 both produce the same result.
True
False
Every call to wait has a corresponding call to notify that will eventually end the wafting.
True
False
Which of the following statements are true?
An abstract class may not have any final methods?
A final class may not have any abstracts methods.
Transient variables must be static.
all of the above
Submit button always fires doPost(...)
True
False
In RMI we invoke client method from remote server
True
False
When we invoke repaint () for a Component, the AWT invokes the method:
draw()
update()
show()
paint()
Frames and applets cannot be used together in the same program.
True
False
In evaluating a logical expression of type 'Boolean expression 1&& Boolean expression 2', both the Boolean expressions are not always evaluated.
True
False
The programmer must explicitly create the system .in and system .out objects.
True
False
Which of the following control expressions are valid for an if statement?
an integer expression
a Boolean expression
either A or B
Neither A or B
Which of the following represent legal flow control statements?
break;
break();
continue(inner);
all of the above
Which of the following string can be used as mode string for creating a RandomAccessFile object?
"rw"
"wr"
"0"
'w''
Give file is a file object, which of the following are legal statements to create a new file.
file.create();
FileOutputStream fos=new FileOutputStream(file);
FileInputStream fis=new FileInputStream(file);
all of the above
One the features of is that an array can store many different types of values.
True
False
A thread can make second thread ineligible for execution by calling the suspend (-) method on second thread.
True
False
A Java monitor must either extend thread class or implement Runnable interface.
True
False
JSP files creates ________________
html files
html files and java files
java files and class files
None of the above.