Programming Forums > Application Development > Java

zip2kx · Mar 4th, 2005, 9:00 AM

Right i cant get it to work and im out of ideas so some programmring guru plz help T__T

this is my bubblesort class file:

(Toggle Plain Text)

public class sort{

public static void bubbelSort(film data[]){
	for (int m = data.lenght -1; m > 0; m--){
		for (int n = 0; n < m; n++){
			if(data[n].langd > data[n+1].langd){
				int temp = data[n].langd;
				data[n].langd = data[n+1].langd;
				data[n+1].langd = temp;
			}
		}
	}
}
}
//

and this the part that calls the class in my app

(Toggle Plain Text)

//
sort.bubbelSort(film);
		
		System.out.print("Sorterad efter langd: ");
		for (int i = 0; i < 5; i++){
			System.out.print(film[i] + " ");
		}

note that it's in a case.
and the error i get when i javac it

(Toggle Plain Text)

//
D:\Java grejer>javac inlupp_DVDDaAr.java
.\sort.java:3: cannot resolve symbol
symbol  : class film
location: class sort
public static void bubbelSort(film data[]){
                              ^
1 error

Anything helpful is accepted

Dizzutch · Mar 4th, 2005, 9:14 AM

what's film? is there a class called film? you're passing film into the sort method, but that's the name of the variable, when you create film, you must do something like [Class] film = new [Class]() the name of the Class is the Type of variable you're passing through.

zip2kx · Mar 4th, 2005, 9:26 AM

oh crap forgot that. Film is a "array" (i think... im translating from swedish -> english so it might be wrong)

i used it to

(Toggle Plain Text)

DVDDaAr film[]=new DVDDaAr[100];

DVDDAaAr is the main class file that sorts the other information that i send in (it works ).

Dizzutch · Mar 4th, 2005, 9:59 AM

ok, so DVDaAr data[] is what you wanna accept in sort()

zip2kx · Mar 4th, 2005, 11:13 AM

So it's

(Toggle Plain Text)

sort.bubbelSort(DVDDaAr data[]);

? or did i get it wrong?

edit: changed some stuff. i Changed

(Toggle Plain Text)

Public static void bubbelSort(film data[]){

to

Public static void bubbelSort(DVDDaAr data[]){

and

(Toggle Plain Text)

for (int m = data.lenght -1; m > 0; m--){
to
for (int m = data.length -1; m >0; m--){

(Toggle Plain Text)

every .langd 
to
.hamtaLangd

.hamtaLangd is a getter which returns a int.

and now im stuck with these 2 last errors

(Toggle Plain Text)

.\sort.java:8: unexpected type
required: variable
found   : value
                                data[n].hamtaLangd() = data[n+1].hamtaLangd();
                                                  ^
.\sort.java:9: unexpected type
required: variable
found   : value
                                data[n+1].hamtaLangd() = temp;
                                                    ^
2 errors

Dizzutch · Mar 4th, 2005, 12:37 PM

what's hamtaLangd?

zip2kx · Mar 4th, 2005, 12:53 PM

a method that returns a private value

Dizzutch · Mar 4th, 2005, 1:47 PM

looks like you're not calling it according to it's signature

meribia_pro_software · Mar 9th, 2005, 9:00 PM

Hello all, I'm new to this forum, but I consider myself an expert in Java (as well as in 6 other computer languages). I think I can help out with this problem if anyone's still paying attention to this thread ....

I wrote a small C++ routine that implements the Bubble Sort algorithm a while back and it should be able to be ported to Java quite easily. Here it is:

void SortObject::bubbleSort () {

int i;
int tmp;

for ( i = 0; i < count - 1; i++ ) {
if ( array[i] > array[i+1] ) {
tmp = array[i];
array[i] = array[i+1];
array[i+1] = tmp;
i = 0;
}
}

}

--------------------------------------------------------------------------------

Download SortObject++: veritedonato.cihost.com/sort.zip
MainWebsite: veritassoftwarecreations.net/

Dizzutch · Mar 9th, 2005, 9:02 PM

his problem wasn't the algorithm, he had some syntax errors in his code.

Mar 4th, 2005, 9:00 AM	#1
zip2kx Newbie Join Date: Mar 2005 Posts: 4 Rep Power: 0	java bubble sort help Right i cant get it to work and im out of ideas so some programmring guru plz help T__T this is my bubblesort class file: (Toggle Plain Text) public class sort{ public static void bubbelSort(film data[]){ for (int m = data.lenght -1; m > 0; m--){ for (int n = 0; n < m; n++){ if(data[n].langd > data[n+1].langd){ int temp = data[n].langd; data[n].langd = data[n+1].langd; data[n+1].langd = temp; } } } } } // public class sort{ public static void bubbelSort(film data[]){ for (int m = data.lenght -1; m > 0; m--){ for (int n = 0; n < m; n++){ if(data[n].langd > data[n+1].langd){ int temp = data[n].langd; data[n].langd = data[n+1].langd; data[n+1].langd = temp; } } } } } // and this the part that calls the class in my app (Toggle Plain Text) // sort.bubbelSort(film); System.out.print("Sorterad efter langd: "); for (int i = 0; i < 5; i++){ System.out.print(film[i] + " "); } // sort.bubbelSort(film); System.out.print("Sorterad efter langd: "); for (int i = 0; i < 5; i++){ System.out.print(film[i] + " "); } note that it's in a case. and the error i get when i javac it (Toggle Plain Text) // D:\Java grejer>javac inlupp_DVDDaAr.java .\sort.java:3: cannot resolve symbol symbol : class film location: class sort public static void bubbelSort(film data[]){ ^ 1 error // D:\Java grejer>javac inlupp_DVDDaAr.java .\sort.java:3: cannot resolve symbol symbol : class film location: class sort public static void bubbelSort(film data[]){ ^ 1 error Anything helpful is accepted

Mar 4th, 2005, 9:14 AM	#2
Dizzutch Professional Programmer Join Date: Dec 2004 Location: Worcester, MA Posts: 441 Rep Power: 4	what's film? is there a class called film? you're passing film into the sort method, but that's the name of the variable, when you create film, you must do something like [Class] film = new [Class]() the name of the Class is the Type of variable you're passing through. __________________ naked pictures of you \| PFO F@H stats

Mar 4th, 2005, 9:26 AM	#3
zip2kx Newbie Join Date: Mar 2005 Posts: 4 Rep Power: 0	oh crap forgot that. Film is a "array" (i think... im translating from swedish -> english so it might be wrong) i used it to (Toggle Plain Text) DVDDaAr film[]=new DVDDaAr[100]; DVDDaAr film[]=new DVDDaAr[100]; DVDDAaAr is the main class file that sorts the other information that i send in (it works ).

Mar 4th, 2005, 9:59 AM	#4
Dizzutch Professional Programmer Join Date: Dec 2004 Location: Worcester, MA Posts: 441 Rep Power: 4	ok, so DVDaAr data[] is what you wanna accept in sort() __________________ naked pictures of you \| PFO F@H stats

Mar 4th, 2005, 11:13 AM	#5
zip2kx Newbie Join Date: Mar 2005 Posts: 4 Rep Power: 0	So it's (Toggle Plain Text) sort.bubbelSort(DVDDaAr data[]); sort.bubbelSort(DVDDaAr data[]); ? or did i get it wrong? edit: changed some stuff. i Changed (Toggle Plain Text) Public static void bubbelSort(film data[]){ to Public static void bubbelSort(DVDDaAr data[]){ Public static void bubbelSort(film data[]){ to Public static void bubbelSort(DVDDaAr data[]){ and (Toggle Plain Text) for (int m = data.lenght -1; m > 0; m--){ to for (int m = data.length -1; m >0; m--){ for (int m = data.lenght -1; m > 0; m--){ to for (int m = data.length -1; m >0; m--){ (Toggle Plain Text) every .langd to .hamtaLangd every .langd to .hamtaLangd .hamtaLangd is a getter which returns a int. and now im stuck with these 2 last errors (Toggle Plain Text) .\sort.java:8: unexpected type required: variable found : value data[n].hamtaLangd() = data[n+1].hamtaLangd(); ^ .\sort.java:9: unexpected type required: variable found : value data[n+1].hamtaLangd() = temp; ^ 2 errors .\sort.java:8: unexpected type required: variable found : value data[n].hamtaLangd() = data[n+1].hamtaLangd(); ^ .\sort.java:9: unexpected type required: variable found : value data[n+1].hamtaLangd() = temp; ^ 2 errors Last edited by zip2kx; Mar 4th, 2005 at 12:04 PM.

Mar 4th, 2005, 12:37 PM	#6
Dizzutch Professional Programmer Join Date: Dec 2004 Location: Worcester, MA Posts: 441 Rep Power: 4	what's hamtaLangd? __________________ naked pictures of you \| PFO F@H stats

Mar 4th, 2005, 12:53 PM	#7
zip2kx Newbie Join Date: Mar 2005 Posts: 4 Rep Power: 0	a method that returns a private value

Mar 4th, 2005, 1:47 PM	#8
Dizzutch Professional Programmer Join Date: Dec 2004 Location: Worcester, MA Posts: 441 Rep Power: 4	looks like you're not calling it according to it's signature __________________ naked pictures of you \| PFO F@H stats

Mar 9th, 2005, 9:00 PM	#9
meribia_pro_software Newbie Join Date: Mar 2005 Posts: 4 Rep Power: 0	Hello all, I'm new to this forum, but I consider myself an expert in Java (as well as in 6 other computer languages). I think I can help out with this problem if anyone's still paying attention to this thread .... I wrote a small C++ routine that implements the Bubble Sort algorithm a while back and it should be able to be ported to Java quite easily. Here it is: void SortObject::bubbleSort () { int i; int tmp; for ( i = 0; i < count - 1; i++ ) { if ( array[i] > array[i+1] ) { tmp = array[i]; array[i] = array[i+1]; array[i+1] = tmp; i = 0; } } } -------------------------------------------------------------------------------- Download SortObject++: veritedonato.cihost.com/sort.zip MainWebsite: veritassoftwarecreations.net/

Mar 9th, 2005, 9:02 PM	#10
Dizzutch Professional Programmer Join Date: Dec 2004 Location: Worcester, MA Posts: 441 Rep Power: 4	his problem wasn't the algorithm, he had some syntax errors in his code. __________________ naked pictures of you \| PFO F@H stats

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java bubble sort help