(1) Locate the error in the following statement and show how to fix it: try i =

Question

(1) Locate the error in the following statement and show how to fix it:

try
  i = Integer.parseInt (str) ;
catch (NumberFormatException e)
  System.out.println ("Input was not an integer") ;

(2) Write a class method named intToString that converts an int value to string form.  For example,
inToString (123) should return "123" and intToString (-123) should return "-123".  Use a "do" loop
that removes digits one by one from the parameter and adds them to a string that is later returned by
the method.

(3) There is an error in the following statement, please identify the error and show how to fix it:
do
  i /= 2
while (i > 10) ;

// please provide explanation for your answers

Explanation / Answer

1)ans:

import java.util.Scanner;

public class mytest{
public static void main(String[] args) {
Scanner sn=new Scanner(System.in);
String str;
System.out.println("Entered your input");
try
{

str=sn.nextLine();
int i = Integer.parseInt (str) ;
System.out.println("Entered Integer value="+i);
}

catch (NumberFormatException e){
System.out.println ("Input was not an integer") ;
}


}
}

2.

import java.util.Scanner;
public class testing{ 

public static void main(String[] args)

{  Scanner sn=new Scanner(System.in);

 String str,str1=" ";  

System.out.println("Entered your input");

     str=sn.nextLine();

 int i = Integer.parseInt (str) ;

 do{  int i1=i%10;

 i=i/10;

str1 = str1+ Integer.toString(i1);

   }while(i!=0);

 System.out.println("Entered Integer value="+str1);    
  }

}


3.ANS:

public class testing {
public static void main(String[] args) {
int i=100;// WE NEED TO INITIALIZE THE LOOP FIRST
do{
i /= 2;
System.out.println ("i="+i);
}while (i > 10) ;
}




}

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