Okay, I still haven't found a real tutorial ...
My solution:
Add/Change <depends>com.intellij.modules.java</depends>
in your plugin.xml
When you use a gradle project add: intellij { plugins 'java'
in your build.gradle
This is just my version of a new constructor
public void actionPerformed(AnActionEvent e)
{
WriteCommandAction.runWriteCommandAction(null, new Runnable() {
@Override
public void run() {
Editor editor = e.getRequiredData(CommonDataKeys.EDITOR);
Project project = e.getData(CommonDataKeys.PROJECT);
PsiFile file = PsiUtilBase.getPsiFileInEditor(editor, project);
PsiJavaFile psiJavaFile = (PsiJavaFile)file;
PsiClass[] classes = psiJavaFile.getClasses();
PsiClass psiClass = classes[0];
PsiElementFactory factory = JavaPsiFacade.getInstance(project).getElementFactory();
PsiMethod newConstructor = factory.createMethodFromText("puplic " + psiClass.getName() + "() {//new Constructor }", psiClass);
final PsiMethod[] psiMethods = psiClass.getMethods();
PsiMethod firstMethod = (psiMethods.length == 0) ? null : psiMethods[0];
psiClass.addBefore(newConstructor, firstMethod);
}
});}
Maybe someone could take a look at it and suggest improvements