Binesh Thusantha

My need is to read data sent over a digital scale to the Serial Port, but the problem is that even though i implement the serialEvent(...) method after implementing SerialPortEventListener interface, it only captures data at one purtcular time and not read continuously.

My requirment is to view the changing data of the scale.

I would be really thank full to who ever wishes to probide me an answer.

thnk you.

Well this is all that is thrown as an exception. i have no idea due to what reason. the same code executed on a differant mechine works just fine and displays the report.

Im using netbeans as my development environment, and i'v added all nessesery .jar files for copiling and displaying the report.

Is there any additional need for me to add any System Variables..?

Help from anyone will be greatly appreciated.

thank you....

I have a test.jrxml which needs to be compiled and viewed, but when compiling with the following statement

JasperReport jasperReport = JasperCompileManager.compileReport("reports/test.jrxml");

there is an Exception thrown

net.sf.jasperreports.engine.JRException: Error compiling report java source files : D:\NetBeans Projects\WeighMasterTech\test_1183793872312_372534.java

It would be really helpful if anyone of you could point out the reason of this cause.

thank you.

Do you know free, legal Netbeans 5.5 ebook.

[Request amended by Dave. Otherwise we'll all get in trouble]
[ March 04, 2007: Message edited by: David O'Meara ]

I will try to install netbean to my computer but at that time said my machine not have sdk and jvm

which classes do not override the equals() and hashCode() methods, inheriting them directly from class Object?

Pls explain what is the hashCode in java and where we can use it?
[ May 29, 2006: Message edited by: Binesh Thusantha ]

class A{
private void m(){
System.out.println("A");
}
}
class B extends A{
private void m(){
System.out.println("B");
}
public static void main(String [] args){
A x = new A();
B y = new B();
x.m();
y.m();
}
}
When I was compile this program throug the Java 5, It will complain Compile error. Pls explay why?
Binesh

class A{
private void m(){
System.out.println("A");
}
}
class B extends A{
private void m(){
System.out.println("B");
}
public static void main(String [] args){
A x = new A();
B y = new B();
x.m();
y.m();
}
}

If i change B y = new A(); as B y = new B(); but the compiler complain the error. so what please explain what is the reason.
Binesh

class A{ private void m(){ System.out.println("A"); } } class B extends A{ private void m(){ System.out.println("B"); } public static void main(String [] args){ A x = new A(); A y = new B(); x.m(); y.m(); } }

when I compile this code through Java 5 version their come compilation error. pleas explain what is the reason for that.

Pls tell how to insert sound in java progrem?
what are the sound we can use in java?
Binesh

abstract class D{ String s1 = "D"; abstract String getS1(); } class E extends D{ String s1 = "E"; String getS1(){return s1;} } class F{ public static void main(String args[]){ D x = new E(); System.out.println(x.s1 + x.getS1()); } }

Pls Explain this code and give an explainable output

Thanks for your reply Vlado Zajac.....

Can u explain why does N() call M()

class M{ static String s1 = "M.s1"; static void prints1(){ System.out.print("M.prints1, " + s1+""); } M(){ prints1(); } } class N extends M{ static String s1="N.s1"; static void prints1(){ System.out.print("N.prints1, " + s1+" "); } N(){ prints1(); } public static void main(String [] args){ N n = new N(); } }

can u explain y this type of output come here? Please explain.....
M.prints1, M.s1N.prints1, N.s1

What is String Pool?
When object create in String Pool?