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Which of the following methods defined in Thread class are static?
a) sleep()
b) join()
c) start()
d) yield()ankush
- Feb 8th, 2016
Sleep() and Yeild() are static.
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Why getInstance() method is used along with class declaration in Java?
komalnk
- Mar 1st, 2016
This is mainly used when there is need of creating an instance of the class.but, when the constructor of class is declared as private. (We cannot create object of object of such class, even inheritance is not possible). So, we use getInstance() method.
sunilbrahmajosyula
- Jan 5th, 2016
It mainly used in singleton class. In the singleton class we will be creating only one object. Where as this getInstance(); will make sure that there is only one copy of an Instance i.e.,copy of an object and returns the single object
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What is the difference between panel and frame
Mranal Jadhav
- Jan 17th, 2016
Frame: The frame encapsulate the commonly use windows and it is a subclass of a window that has title bar, menu bar, status bar, borders and windows resizing corners. Panel: The panel is the subclas...
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Which package is always imported by default
The java.lang package is always imported by default.
peter
- Jan 18th, 2016
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Can methods be overloaded based on the return types
Anonymous
- Mar 3rd, 2016
We can call the method by their name and not by their type;;
Method::
int sum()
void sum()
calling::
Where object is a;
a.sum();
here, it will arise ambiguity which method to call, void sum() or int sum() and thus compiler give error
dheerendra
- Sep 2nd, 2008
Methods cannot be overloaded only on the basis of return type atleast one argument should be different, otherwise compiler will give the message "The function is already defined in the class".
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What method is used to specify a container's layout
The setLayout() method is used to specify a container's layout.
Dharmendra Barad
- Mar 26th, 2016
Void setLayout(LayoutManager layoutObj)
Sandhya.Kishan
- Jul 13th, 2012
The method is used to specify a containers layout is setlayout() method.
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The concept of polymorphism is often expressed by the phrase
Skill/Topic: AWT & AppletsA) One interface, multiple methodsB) Multiple interface, one MethodC) Multiple interface, Multiple methodD) One interface, One method
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Single Thread and Multiple Thread
What is difference between Single Thread and Multiple Thread?
Explain Single Thread Model Vs. Multi thread model. Support your answer with practical example? -
When does the compiler supply a default constructor for a class
The compiler supplies a default constructor for a class if no other constructors areprovided.
Suzal Bajrachraya
- May 3rd, 2016
The answer is quite unclear. Can you please go in depth a bit.
Or, Even conscider a code snippet if possible!
Thank you!dpsharma
- Jun 15th, 2009
Compiler provides default constuctor only if there is any no argument constructor present in the super class. If super class has no constructor explicitly defined then also compiler provides default constructor for sub class.
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Coding question
Given the age of 10 couples(husband and wife), print Number of years of age difference for all the 10 people Input Specification First 10 inputs contain the ages of all husbands And the next 10 are the ages of all wives Output Specification Output should be exactly 10 lines giving the number of years of the age difference between them. Note: output is a positive integer Sample Input 50 40 53 24 78...
_________ is a feature that allows one interface to be used for a general class of actions.
A) EncapsulationB) ClassC) InheritenceD) Polymorphism
State true or false :- Final variables should be declared in the beginning?
A) TrueB) False
Thirumala Reddy K
- Jun 10th, 2016
Final variables should be declared in the beginning
alskor
- Mar 8th, 2006
This is wrong. final variables CAN be declared in the beginning as well as at the end of a class.so, the answer for this question is wrong.the limitation is that final variables can't be declared inside methods and can't be modified. but this is out of the scope of this question.
What is the difference between a break statement and a continue statement
A break statement results in the termination of the statement to which it applies (switch,for, do, or while). A continue statement is used to end the current loop iteration andreturn control to the loop statement.
sandra
- Jun 13th, 2016
What happens if break is not used in switch statement?
komalnk
- Mar 1st, 2016
A break statement results in the termination of the statement to which it applies (switch,for, do, or while). A continue statement is used to end the current loop iteration and return control to the loop statement.
What will be the result of compiling and executing the code listed below?
java
public class Finder {
public static void main(String[] args){
System.out.println(X.Y.Z);
}}
class X{
static class Y{ static String Z ="Apple"; }
static W Y = new W();
}
class W{ String Z = "Orange";}
a) Apple
b) Orange
c) Compile time Error
d) Runtime Exception is thrownWhat is the jdbc and odbc?what is the difference between jar files and bat files
prashant kumar
- Sep 11th, 2016
Clearly explained!! Thank you very much Sir.
speakup87
- Jan 14th, 2009
JDBC: Java Database Connectivity (JDBC) provides Java developers with a standard API (application Programming Interfaces) that is used to access databases, regardless of the driver and database pr...
How is Java considered tamper free?
I read in the properties of java that it is secured as it is tamper free. I would like to know what is tamper free and how it applies to Java?
Ans