Thread: call another class

how to call another public class from another public class

Use a new statement to create the class and get a reference to the class. Then use that reference to call method:

  TheClass theClass = new TheClass();   // create instance and set reference
   theClass.theMethod();    // call a method in the other class

Post any code that you are having problems with. Also copy and paste any error messages here.

Note: You do not call classes, you call methods in a class.

i want to call above class "mqTemplate "

Are you referring to calling the class's constructor when creating an instance of the class?

Did you get any error messages? Please copy the full text and paste it here.

what is @component, @Autowired, @Override

I do not recognize the first two annotations.
@Override is used when extending a class or implementing an interface and you want to ask the compiler to check if your method override is correct.

Read the tutorial about annotations: https://docs.oracle.com/javase/tutor...ons/index.html

Please edit your post and wrap your code with code tags:

[code]
**YOUR CODE GOES HERE**
[/code]

to get highlighting and preserve formatting.

Originally Posted by Norm

Are you referring to calling the class's constructor when creating an instance of the class?

Did you get any error messages? Please copy the full text and paste it here.


I do not recognize the first two annotations.
@Override is used when extending a class or implementing an interface and you want to ask the compiler to check if your method override is correct.

Read the tutorial about annotations: https://docs.oracle.com/javase/tutor...ons/index.html

Please edit your post and wrap your code with code tags:

[code]
@component
public class anotherClass implements ownClass {

@Autowired
private MqMsgModel mqMsgConvertor;

@Override
public mqMsg mqTemplate (MqMsg mqMsg) {

try {
mqMsg.getMsgHeader().setTime(new Date());
catch( Exception e) {
e.printStackTrace()
}
}

}

}
[/code]

to get highlighting and preserve formatting.

if i want to call above class from another public class, i just create instance and call its method.
here is my coding.

 
 anotherClass tryClass= new anotherClass ();   // create instance and set reference
   mqMsg testMsg=tryClass.mqTemplate (mqMsg);    // call a method in the other class

[code in another class] is it correct?

is it correct?

It could be. Did you try it to see what happens?

Please wrap all posted code in code tags.

There is one confusing bit in the code
mqMsg
is shown as both the name of a class and the name of a variable.