-
AND
String str=new String("abc");
">Is there any difference between String str="abc";ANDString str=new String("abc");
sensashan
- Oct 12th, 2009
Yes there is a difference. In case of str = "abc" we are creating an anonymous object and assigning it the reference str. But in case of str = new String("abc"), we are actua...
vinaygadiraju
- Oct 23rd, 2008
class A {..String s1="abc";String s2=new String "abc";..}The first line creates (sort of, see below) the String "abc" in the String pool, and s1 points to it. The second ...
-
what is the usage of this keyword in java?
suman
- Jun 13th, 2006
I would like to give you an explanation of using this(). Suppose we have class A having method1(), class B extends A having method1().IN lass B we need to call method1() of classB.if we call it ...
ashwinsware
- May 22nd, 2006
Hi Friends, The this keyword in java has two uses It is used to get the current object that is the object on which the curr...
-
ob.a++;
try{
Thread.sleep(1000);
}
catch(Exception e)
{
e.printStackTrace();
}
}
}
}
class C extends Thread
{
C()
{
start();
}
public void run()
{
for(int i=0;i<2;i++)
{
System.out.println("ValueC:"+ob.a);
ob.a++;
try{
Thread.sleep(1000);
}
catch(Exception e)
{
e.printStackTrace();
}
}
}
}
B t1=new B();
C t2=new C();
}
}
">anybody can explain how it is going to work and why it works soclass A{ int a; A() { a=20; }}class Myth{public static void main(String S[]){final A ob=new A(); class B extends Thread { B() { start(); } public void run() { for(int i=0;i
HSridhar
- Jun 10th, 2006
Good explaination by sunil,I appreciate your clarity.To J2EE expert group, Plz do reply with such an explaination when you provide a valid answer.
sunil_dalvi82
- Apr 29th, 2006
op is ValueB:20ValueC:21ValueB:22ValueC:23Both Classes B and C extend thread, So when constructor is called of each class will create a new thread, which you have started by start().So flow of execut...
-
What is exactly difference between throw and throws in java?
imwim
- May 1st, 2010
To manually throw a exception we used throw (user defined exception) and throws are default exception which we used when we use bufferreader.
ajaink2008
- Nov 21st, 2007
Throw is used to pass an exception up to the method that called itThrows is used to indicate that method pass exception to the method that the method called
-
Why there is no constructor in Servlet?
Servlet is Java class. Then why there is no constructor in Servlet? Can we write the constructor in Servlet
jontyjonty
- Sep 10th, 2009
We can have parameterized constructors for servlet. Explanation:Consider this example class One implements Servlet{}-> now One is a java class having all the special features of a servlet.-> so just ...
san.manish
- Apr 8th, 2009
A servlet is just like an applet in the respect that it has an init() method that acts as a constrcutor. Since the servlet environment takes care of instantiating the servlet, an explicit constructor ...
-
The type of data returned by a method need not be compatible with the return type specified by the method
A) TrueB) FalseExplanation: The type of data returned by a method must be compatible with the return type specified by the method. For example, if the return type of some method is boolean, you could not return an integer
vtheivamani
- Dec 20th, 2006
its false...return type of the return value must be match with type of that method
-
Comments in Java Program must begin with /* and end with */
A) TrueB) False
HSridhar
- May 14th, 2006
I got 29/30 and the only wrong answer was this which i think is incorrect evaluationbecause java inline coments can also begin with //so please reframe the question and remove the word "must begin" and replace the term by "can begin"RegardsH.Sridhar
Talman
- Apr 3rd, 2006
not necessary.there are 3 types of comments available in java.this restriction is only for multiline comments. this is not the case for single line and documentation comments
