ICSE − Q & A

Strings are immutable right ( mentioned in the text ) apart from theory i want to know the practical  application of that.......Like we often change the data of the string many times by using library functions like .toUpperCase or etc.....we use s=s.toLowerCase(); and we get the right output but why not it happens if we write directly s.toLowerCase instead of creating a seperate String object ?? i mean can anyone explain the diff and say how Strings are immutable...practical application is equally important right..so plz

Guys I can take input in the function itself and thn give the output there only right ??
So in the caller program it would be just on.input(); 
Am I right??

I need Twisting Questions for Section A!!(ECONOMIC APPLICATIONS)

fany physical education students here??

Class of java.io which inputs data?

Difference between control variable and control statements
what are object data types giveexamples

Where i can find computer applications notes...

hey i heard that associativity rule no longer follows and is removed from the new sumita arora book, pls confirm..

DO WE HAVE TO WRITE VARIABLE DESCRIPTIONS OR COMMENTS IN COMPUTER????

Is encapsulation lesson is there or not.......  Pls reply