ICSE − Q & A

//this my program plz tell me the errors
import java.util.*;
public class tnaminatina
{
 public void check()
  {String a="",b="";
      Scanner sc=new Scanner(System.in);
    System.out.println("enter sentence");
   String s=sc.next();
   System.out.println("enter sentence");
   String g=sc.next(); 
   System.out.println("enter sentence");
   String d=sc.next();
   a=s.concat(g);
   b=a.concat(d);
   System.out.println(b);
   b=b.toUpperCase();
   System.out.println(b);
   b=b.trim();
   for(int i=0;i96&&b.charAt(i)<=122)
     c=(char)b.charAt(i)+32;
    else
    if(b.charAt(i)>64&&b.charAt(i)<=90)
     c=(char)b.charAt(i)-32;
    }
      System.out.println(b);
   }

 
  }

+ 1 more questions by adiketh198  

http://www.respaper.com/sarthakb/5348-pdf.html Question 8 its difficult giving lots of errors
asked by Adithya Kannan (adiketh198) 9 years ago
1

Is it necessary to write comments? 'Cause I've never done it in school, nor have I been told to do so.

Question in comments

guys can someone give me notes for functions like math.ceil , floor etc

difference between protected n private access specifiers

+ 1 more questions by rayner  

please explain the use of 'this keyword' n its definition
asked by Rayner Cardozo (rayner) 9 years ago
1

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?