In evaluating a logical expression of type 'Boolean expression 1&& Boolean expression 2', both the Boolean expressions are not always evaluated.
True
False
Correct Answer :
A. True
Related Questions
A static class method can be invoked by simply using the name of the method alone.
True
False
We can over load methods with differences only in their return type.
True
False
Which of the following methods can be used to draw the outline of a square?
fillRect()
drawLine()
drawString()
all of the above
JSP files creates ________________
html files
html files and java files
java files and class files
None of the above.
Which of the following statements are true?
UTF characters are all 24 bits.
Reader class has methods that can read integers and floats.
Unicode characters are all 16 bits.
all of the above
In order to connect to a database through java program we must create _______-
Connection, Statement, ResultSet
Connection, ResultSet
Statement< ResultSet
Connection, Statement
The methods wait() and noify() are defined in
java.lang.Thread
java.lang.Runnable
java.lang.Object
java.lang.ThreadGroup
Java is fully object oriented programme.
true
false
All the bitwise operators have the same level of precedence in Java.
True
False
Frames and applets cannot be used together in the same program.
True
False
What is error in the following class definitions?
abstract class xy {
abstract sum(int x, int y) {
}
}
abstract sum(int x, int y) {
}
}
class header is not define properly
constructor is no defined
method is not defined properly
no error
For all insert, update, delete, query operations on a database, ResultSet object creation is mandatory.
True.
False.
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
A thread can make second thread ineligible for execution by calling the suspend (-) method on second thread.
True
False
When present, package must be the first no comment statement in the file.
True
False
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
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
When X is a positive number the operations x>> 2 and x>>>2 both produce the same result.
True
False
Objects are passed to a method by use of call-by-reference.
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
DataInput is
An abstract class defined is java.io.
A class we can use to read primitive data types.
An interface that defines methods to open files.
An interface that defines methods to read primitive data types.
A catch can have comma-separated multiple arguments.
True
False
The check box group class is a subclass of the component class.
True
False
Which of the following represent legal flow control statements?
break();
continue(inner);
return;
exit();
Any method in a supper class can be over ridden in its subclass.
True
False
When the string objects are compared with ==, the result is true If the strings contain the same values.
True
False
When we invoke repaint () for a Component, the AWT invokes the method:
draw()
update()
show()
paint()
JdbcOdbcDriver is an object of Object class
True
False
Which of the following methods belong to the String class?
length()
compareTo()
substring()
all of the them
The keywords reserved but not used in the initial version of Java re:
Synchronized
Boolean
union
goto