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Why? Isn't this kind of anti-pattern?
This makes it easier for you to organize helper methods in your libraries; you can keep static methods specific to an interface in the same interface rather than in a separate class.
Please read this
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The Duration class is following the immutable pattern. In general I try to avoid object regeneration for resource reasons. I have learnt about the immutable concept and it is quite controversial IMHO. How come this special decision to introduce the immutable pattern especially for the Duration class?
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The example here: https://github.com/mapstruct/mapstruct-examples/blob/3457f37c24ea7799b0752cc7ee8307283ab09ad2/mapstruct-mapping-with-cycles/src/main/java/org/mapstruct/example/mapper/EmployeeMapper.java
The generated mapping will be like:
Employee toEmployee(EmployeeDto employeeDto, CycleAvoidingMappingContext context) {...}
In practice, how to get a valid CycleAvoidingMappingContext object ?
You use the constructor.
new CycleAvoidingMappingContext()
When in doubt, look for unit tests.
https://github.com/mapstruct/mapstruct-examples/blob/master/mapstruct-mapping-with-cycles/src/test/java/org/mapstruct/example/EmployeeMapperTest.java#L59
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Is it a good practice to overload method in Java, calling this original method inside a new one but passing some default values as parameters for original method?
As the commenters noted, this is a standard practice. Typically, it is used to allow simplified signatures in order to provide default values. Like any other, pattern, some thought should be taken to avoid abusing it.
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I may be stupid for asking this but... I don't know if I should format blocks like this:
public void elbow() {
System.out.println("Elbow");
}
or:
public void elbow() {
System.out.println("Elbow");
}
or are both correct?
Both are correct. It is a matter of preference. Most guys I work with like to be able to see more code on a single screen so opt for the first, within reason.
You may also mix them if you have a long loop it may be good to place whitespace at your own discretion to improve readability.
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An object is an instance of a class What does that means I never understand this phrase properly.Give me some real world examples.I am bit confused.
Human is a class. You are an instance of Human.