How to call a method from a separate class using IBAction

I can't work out how to call a method form an external class with IBAction.
//This Works 1
-(void)addCard:(MyiCards *)card{
[card insertNewCardIntoDatabase];
//This works 2
-(IBAction) addNewCard:(id)sender{
//stuff -- I want to call [card insertNewCardIntoDatabase];
I have tried tons of stuff here, but nothing is working. When i build this I get no errors or warnings, but trying to call the method in anyway other that what is there, i get errors.

Can you explain more about what you are trying to do? IBAction is just a 'hint' to Interface Builder. It's just a void method return. And it's unclear what method is where from your code snippet below. is addNewCard: in another class? And if so, does it have a reference to the 'card' object you are sending the 'insertNewCardIntoDatabase' message? Some more details would help.
Cheers,
George

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How to Call a method from a separate class...?

Hi there...
I have a class name HMSCon which has a method named con...
method con is the one the loads the jdbc driver and establishes the connection....Now!I have a separate class file named TAQueries,this is where i am going to write my SQL Statements...any idea how to use my variables from HMSCon to my TAQueries class???
here's my code:
public class HMSCon{
public static void con(){
try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String url="jdbc:odbc:;DRIVER=Microsoft Access Driver (*.mdb);DBQ=" +
"E:/samer/HardwareMonitoringSystem/src/hms/pkg/hmsData.mdb";
Connection cn = DriverManager.getConnection(url,"Admin", "asian01");
}catch(Exception s){
System.err.print(s);}
here's my seperate class file TAQueries,i put an error message below..
class TAInfoQueries{
public void insertNewTA(String TAID,String Fname,String Mname, String Lname,String Age,
String Bdate,String Haddress,String ContactNo){
// Statement stmt=cn.createStatement(); ERROR: Cannot find symbol cn.
// stmt.executeUpdate("INSERT INTO TechnicalAssistants VALUES('sdfas','sdfsdf','sdfdsf','sdfdsf',3,04/13/04,'asdf','asdfsdf')");
// stmt.close();
}

You can try the below code, but it's a bad idea to use staitc member for connection:(
public class HMSCon{
static Connection cn;
static{
con();
public static void con(){
try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String url="jdbc:odbc:;DRIVER=Microsoft Access Driver (*.mdb);DBQ=" +
"E:/samer/HardwareMonitoringSystem/src/hms/pkg/hmsData.mdb";
cn = DriverManager.getConnection(url,"Admin", "asian01");
}catch(Exception s){
System.err.print(s);}
here's my seperate class file TAQueries,i put an error message below..
class TAInfoQueries{
public void insertNewTA(String TAID,String Fname,String Mname, String Lname,String Age,
String Bdate,String Haddress,String ContactNo){
// Statement stmt=HMSCon.cn.createStatement(); ERROR: Cannot find symbol cn.
// stmt.executeUpdate("INSERT INTO TechnicalAssistants VALUES('sdfas','sdfsdf','sdfdsf','sdfdsf',3,04/13/04,'asdf','asdfsdf')");
// stmt.close();
}

How to call java method from workflow script?

Hi
I have a requirement of updating field value 'Document Status' based on review/approve of content from Workflow and hence need to update the version number. For that I need to call my java method from workflow during submit of review/approve condition. Please let me know how to call java method from workflow?
Is there any alternative better way to achive this requirement from workflow? Please suggest.
Thanks,
Sarang

OK. So, I think we can all conclude that you don't need to call any Java method, can't we? And, that wfUpdateMetadata is the command that will update your metadata.
Now, the question is what are its arguments. It has two - the first is the name of a custom metadata field to be updated (let's suppose that one field is called xMinorVersion, and the other xMajorVersion), the other is the new value, e.g. <$wfUpdateMetaData("xMinorVersion", "New value.")$>As for new value - do you insist on using strings? Since you want to increase the value, it would be more convenient to work with numbers. For instance, with integers you could go with <$wfUpdateMetaData("xMinorVersion", xMinorVersion + 1)$>With strings you will need to convert it to numbers and back to strings. Besides, what happens if you have more than 100 minor versions? (you mentioned you want to add 0.01, but that would finally increase the major version, wouldn't it?) So, I think these two numbers are independent (perhaps, with exception that increase on the major version set the minor version to .00).
If you want to present it, you can use profiles that will construct for you the representation 2.304 out of MajorVersion = 2, MinorVersion = 304
Solved?

How to call java method from C ?

Hello,
I try to call a native method from java which calls java method from the same class. Exception (noSuchMethodError) is thrown. Any ideas?
Thanx in advance !
here is the source of the native method :
JNIEXPORT jint JNICALL Java_TestDll_Proc_1Mul_1Int_1Var_1Var_1Stdcall (JNIEnv * env, jclass jcl, jint jarg1, jint jarg2) {
int arg1;
int arg2;
int arg3;
jint res;
char * ch = "test";
jfieldID fid;
jmethodID mid;
int (* procedure) (int *, int * ,int *);
int mch;
arg1 = (int )jarg1;
arg2 = (int )jarg2;
procedure = GetProcAddress(libraryHandle,"Proc_Mul_Int_Var_Var_Stdcall");
procedure(&arg1,&arg2,&arg3);
res = (jint) arg3;
printf("(*env)->GetMethodID(env, jcl, \"test\", \"()V\");\n");
mid = (*env)->GetMethodID(env, jcl, "test", "()V");
printf("(*env)->CallVoidMethod(env, jcl, mid);\n");
(*env)->CallVoidMethod(env, jcl, mid);
return res;
here is the source of the java file:
public class TestDll {
static {
System.loadLibrary("testdllwrap");
System.out.println("java: Library testdllwrap.dll loaded");
public TestDll() {
public native int Proc_Mul_Int_Var_Var_Stdcall(int jarg1, int jarg2);
public void test() {
System.out.println("java: test()");
public static void main(String[] args) {
TestDll access = new TestDll();
int a = 5;
int b = 6;
int c = 0;
System.out.println("Calling Proc_Mul_Int_Var_Var_Stdcall");
c = access.Proc_Mul_Int_Var_Var_Stdcall(a,b);
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Something is wrong with the code you posted here.
Since your native method is not static, it should have the jobject instance as a parameter in the function prototype, not a jclass. Also, you should be calling CallObjectMethod with a jobject, not jclass.
Check out Jace at http://jace.reyelts.com/jace.
To call the java method you would do:
JNIEXPORT jint JNICALL Java_TestDll_Proc_1Mul_1Int_1Var_1Var_1Stdcall
(JNIEnv * env, jobject jTestDll, jint jarg1, jint jarg2) {
TestDll testDll( jTestDll );
testDll.test();
}God bless,
-Toby Reyelts

Calling a method from a super class

Hello, I'm trying to write a program that will call a method from a super class. This program is the test program, so should i include extends in the class declaration? Also, what code is needed for the call? Just to make things clear the program includes three different types of object classes and one abstract superclass and the test program which is what im having problems with. I try to use the test program to calculate somthing for each of them using the abstract method in the superclass, but its overridden for each of the three object classes. Now to call this function what syntax should I include? the function returns a double. Thanks.

Well, this sort of depends on how the methods are overridden.
public class SuperFoo {
public void foo() {
     //do something;
public void bar(){
     //do something
public class SubFoo extends SuperFoo {
   public void foo() {
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}However, if you have a superclass with an abstract method, then all the subclasses implement that same method with a relevant implementation. Since the parent method is abstract, you can't make a call to it (it contains no implementation, right?).

How to call a method from class interface

Hi ,
I want to call a method from a 'class interface' in a BADI .
Class Interface -- /SAPSRM/CL_PDO_DO_BASE
Method -- /SAPSRM/IF_PDO_DO_PARTNER_BASE~UPDATE_ITEM_PARTNERS
Please let me know how can I call this method in my BADI.
Thanks-

Hi Harmeet,
Follow these simple steps.
1. Create an instance of class interface /SAPSRM/CL_PDO_DO_BASE if method /SAPSRM/IF_PDO_DO_PARTNER_BASE~UPDATE_ITEM_PARTNERS is instance method and
call instance -> /SAPSRM/IF_PDO_DO_PARTNER_BASE~UPDATE_ITEM_PARTNERS
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How to Call C++ Method from Java

I need to call C++ method from Java.
I have gone through the JNI tuorial , but was not able to pin point things.
I read that :
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Now i have java class :
Java Code JavaClass.java ---->
class JavaClass{
public native void nativeMethod();
    static
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}Cpp Code:
NativeCppCode.h---->
class NativeCppCode
public:
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private:
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NativeCppCode::setValue()
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NativeCppCode* nativeInstabce = new NativeCppCode();
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}Is this the correct way to do it.
Any suggestion would be a great help to me

tryit wrote:
I need to call C++ method from Java.Not possible.
JNI uses C methods.
Is this the correct way to do it.Same way you would do it in any C/C++ method (not java)
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Common idiom for the pointer in the above is to pass it back and forth to your java code as a java long. You cast it it and from your class pointer. Provide an explicit java method to free it when done. Besides providing the explicit method also implement a finalizer to free it as well (however that is a fail safe and should not be relied upon.)

How to call Java method from XSLT??

Hi All,
Jdev 11.1.1.3.0
I have a requirement to implement that, I have to call Java method from XSLT. Could anyone please suggest to implement that??
Thanks,
Santosh M E

As pointed by others, you must expose your method as a custom function, registering with JDeveloper (for development time) as well as with SOA Suite (for runtime).
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https://blogs.oracle.com/reynolds/entry/building_your_own_path
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Here's one I wipped up in 10 minutes... Cool!
package forums;
import javax.swing.JFrame;
import javax.swing.JTextArea;
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class FileDisplayer extends JFrame
private static final long serialVersionUID = 0L;
FileDisplayer(String filename) {
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    try {
      text.setText(Filez.read(filename));
    } catch (FileNotFoundException e) {
      text.setText(e.toString());
    this.add(text);
public static void main(String args[]) {
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Filez.read
   * reads the given file into one big string
   * @param String filename - the name of the file to read
   * @return the contents filename
public static String read(String filename) throws FileNotFoundException {
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   * Reads the contents of the given reader into one big string, and closes the reader.
   * @param java.io.Reader reader - a subclass of Reader to read from.
   * @return the whole contents of the given reader.
public static String read(Reader in) {
    try {
      StringBuffer out = new StringBuffer();
      try {
        char[] bfr = new char[BFRSIZE];
        int n = 0;
        while( (n=in.read(bfr,0,BFRSIZE)) > 0 ) {
          out.append(bfr,0,n);
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}Edited by: corlettk on Dec 16, 2007 1:01 PM - dang [code [/tags][

How to call the method from the java bean and pass it to JSP textbox

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your question doesn't provide much informartion. provide some other information and coding so that we could tell exactly what you are looking for?

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I have just looked over my program and realised my class names are not the most discriptive, so I have renamed them to give you a clearer picture.
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See this
Blog post.
Andy Tauber
Data Architect
The Vancouver Clinic
Website | LinkedIn
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"Mark as Answer" and "Vote as Helpful" on posts that help you. This can be beneficial to other community members reading the thread.

How to call a method from a separate class using IBAction

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