intelij idea shortcut to implement interface as a new class - intellij-idea

suppose i have a interface like this:
public interface Dumb{
String getDumbName();
}
Is there any shortcut or menu in intellij-idea to create new classes implementing the interface with dummy implement methods like this:
public class Dumber{
public String getDumbName(){
return null;
}
}

There are multiple ways to go about this.
On the interface name itself, you can hit Alt+Enter (Option+Enter on Mac), then pick 'Implement interface'. IDEA will prompt for a class name and a package to put the new class in, then generate an implementation class.
Alternatively, create the class, then add implements Dumb after the name (im<tab> Dumb). IDEA will complain that your class doesn't implement the correct methods, and offer (Alt+Enter Enter Enter) to generate them for you. Hitting Ctrl+I or clicking 'Implement methods' in the Code menu also works.

Related

Implement class with private constructor in Kotlin

I'd like to write a little stub for a service class. The reason is, that I don't want to push the secret API keys that the service class needs to the CI and I don't want the service class in the CI to run against the external service anyways.
However, the service class is non-abstract and has a private constructor.
When I try to create my stub class like:
open class FirebaseMock: FirebaseMessaging {
// implemented functions go here
}
it says
This type has a constructor, and thus must be initialized here
If I try to initialize it like:
open class FirebaseMock: FirebaseMessaging() {
// implemented functions go here
}
it goes
Cannot access '<init>': it is private in 'FirebaseMessaging'
Which is true:
private FirebaseMessaging(Builder builder) {
...
All I want to do is make my stub class formally a subclass of FirebaseMessaging to use it as placeholder, that mocks the FirebaseMessaging-Functionality when the API keys are not present.
How can I just implement a non-abstract, non-interface class, that has a private constructor nonetheless.
My current solution is a wrapper, which works but is not as nice.
Mockito etc. does not seem like a good solution, since this is still in the productive code.

intellij how to auto completion a class in string literal

I have defined a method like below:
public void mehtod(String clazz) {
...
}
clazz parameter is a FQDN name as: com.example.Hello, and I want intellij to autocomplete when i type "com.example.Hello".
Do I need to make some custom config in Intellij?
You can use "Class Name Completion" for this.
Ctrl-Option-Space on Mac, Ctrl-Alt-SPace on Windows
I agree with "JB Nizet", though: Use Hello.class.getName() is more reliable

IntelliJ: custom code generation templates

How can I define custom code generation like Getters/Setters in IntelliJ. I took a look on their docs but they don't specify where I can do this. The code I would like IntelliJ to generate for me is like below:
public class Person {
private String name;
private String username;
//I want IntelliJ to propose me to generate this after Alt+Insert
public Person withName(String name){
setName(name);
return this;
}
//and this
public Person withUsername(String username){
setUsername(username);
return this;
}
}
Thanks a lot
When you press alt+insert you can click Getter and Setter. There are Getter template and Setter template drop-downs that you can select. Click the ... and you can create new templates.
It appears you're trying to follow the builder pattern. IntelliJ already has a setter template for this called "Builder". You can select it from the setter drop-down and you should be good.

Is TestNG's ITestResult Interface or a Class? if interface which class implemented this interface?

Is TestNG's "ITestResult" an Interface or a Class? we are using the below code to take the screenshot of the webpage whenever there is a failure. we are getting the status of the test by using ITestResult. I have checked the TestNG's API and it is showing as ITestResult as a interface, then which class is implemented this interface? And how we are accessing the method getStatus() using Interface reference? Can anyone clarify my doubt?
#AfterMethod(alwaysRun=true)
public void takeScreenShot(ITestResult result){
if(result.getStatus()==2){
ITestNGMethod instance = result.getMethod();
String testName = instance.getMethodName();
TestUtil.captureScreen("xyz", testName,"Failure_Screenshots");--> method to take screen shot and save the image file in specific directory
}
}
Thanks in Advance!!
org.testng.internal.TestResult is the class which implements the ITestResult interface.
In eclipse, you can click on a type and click Ctrl+T to see the Type Hierarchy to get this data for any type.

Class test in SAP class builder

Im trying to test class from within of SAP class builder. I pressed F8 (Test) but Create instance menu item is not active on test screen:
My class has both static and instance constructors. Where is my mistake? How to force this menu item to be active?
Is this parameter set to public?
Moreover, if it is, then it is probably because your class implements an interface. Just click the magnifying glass icon next to the interface name and you will both be able to execute static and instance methods.