trouble inhasNext

[hayri hocaoglu]

why ı can exit the loop with pressing enter

[Campbell Ritchie]

Welcome to the Ranch

Although you correctly used the code tags, that code is surprisingly difficult to read. And I am not quite sure what your question means. I think you need to go back a stage. There is a bit of hardware getting between you and the solution. It is a black wire between the wall and your computer. Remove that, then try with a sheet of paper. Read carefully what Scanner#hasNext() does, and see if you can work out any circumstances in which it might return false when you are using the keyboard. You appear to be using the input as an int, so why don’t you look for a method which keeps returning true until you don’t have an int? Or what about a while loop instead of the do looP? Somebody else had similar problems, so you can see you can terminate your loop by writing stop.

[hayri hocaoglu]

hmm ı understand. can you say how ı can do that exit to loop when ı press enter.

[Tony Docherty]

Please don't delete code/text in an earlier post after getting an answer. It makes the thread unreadable for others.

[Henry Wong]

hayri hocaoglu wrote:why ı can exit the loop with pressing enter

Well... with the original question (and all content) deleted, I am assuming that this followup question is rhetorical?

Henry

[Paul Clapham]

Original post recovered from Google cache (with code tags added):

I want to exit when ı press enter but this hasnext doesnt work what can ı do ?

import java.util.Scanner;
public class ques{

public static void main(String [] args){
Scanner input = new Scanner(System.in);
System.out.println ("Enter integers(if you want exit you will press enter ):");
int a = 10;
int [] Num = new int[a];
int i = 0;
String b ="";
do{
Num [i] = input.nextInt();
Num = increasearry(Num);
i++;
}while(input.hasNext());
int k = 10;
int l = 1;
while(l<92&&k<101){

System.out.print(l+"-"+k+" | ");
for(int j = 0; j<Num.length;j++){
if(l><=Num[j]&&Num[j]<=k)
System.out.print("*");

}
k+=10;
l+=10;
System.out.println ();
}
}
public static int [] increasearry(int [] list ){ // increase the array length
int a = list.length;
int [] result = new int [a+1];// create a new array whose length is longer than old array
for(int j = 0 ; j<list.length; j++){
result [j]= list[j]; // copy the arrays
}
return result ; // return the main class
}
} 

>

[hayri hocaoglu]

Paul Clapham wrote:Original post recovered from Google cache (with code tags added):

I want to exit when ı press enter but this hasnext doesnt work what can ı do ?

import java.util.Scanner;
public class ques{

public static void main(String [] args){
Scanner input = new Scanner(System.in);
System.out.println ("Enter integers(if you want exit you will press enter ):");
int a = 10;
int [] Num = new int[a];
int i = 0;
String b ="";
do{
Num [i] = input.nextInt();
Num = increasearry(Num);
i++;
}while(input.hasNext());
int k = 10;
int l = 1;
while(l<92&&k<101){

System.out.print(l+"-"+k+" | ");
for(int j = 0; j<Num.length;j++){
if(l><=Num[j]&&Num[j]<=k)
System.out.print("*");

}
k+=10;
l+=10;
System.out.println ();
}
}
public static int [] increasearry(int [] list ){ // increase the array length
int a = list.length;
int [] result = new int [a+1];// create a new array whose length is longer than old array
for(int j = 0 ; j<list.length; j++){
result [j]= list[j]; // copy the arrays
}
return result ; // return the main class
}
} 

>

ı want to remove this question because of wrong question

[Paul Clapham]

hayri hocaoglu wrote:ı want to remove this question because of wrong question

It's very confusing when somebody posts a question, and then other people talk about it, and then the original poster deletes the question. It just makes the thread look incoherent. So we don't really like it when that happens.

But if the question was wrong, then no problem... just say so, ask the right question, and the thread can continue.

[Henry Wong]

hayri hocaoglu wrote:
ı want to remove this question because of wrong question

Maybe it would be a good idea to start a new topic with the right question -- this topic seems to be a mess at this point.

Henry