arraylist

问题 I need to create a new multiple instance of objects for the Pojo class in drools decision table. I have implemented using two facts Student fact and subject fact class. I need to fire all the rules in the decision table and I need to add all the values into array-list of the objects. But I'm getting only last rule values of decision table. It seems like decision table values are getting overridden. Fact 1 Class StudentFact{ private int id; private String name; private List<SubejctFact>

问题 I need to create a new multiple instance of objects for the Pojo class in drools decision table. I have implemented using two facts Student fact and subject fact class. I need to fire all the rules in the decision table and I need to add all the values into array-list of the objects. But I'm getting only last rule values of decision table. It seems like decision table values are getting overridden. Fact 1 Class StudentFact{ private int id; private String name; private List<SubejctFact>

问题 When clicking the add button, the same widget is replicated. The widget contains the list of checkboxes that are multi selectable. I am able to replicate the widget but I got problem to handle the checkboxes according to the index of the widget. In image below the checkbox checked state is replicated along with the new add widget. I have implemented as follows: Build the widget according to the addbutton click ListView.builder( itemCount: counting, shrinkWrap: true, physics: const

问题 i have a list of object in an activity in which a button in the same activity adds an object to it on every click i want to be capable to access that list and iterate it from any other activity i made it public but it gave me an error ! package com.fawzyx.movie_rental_store; import java.util.ArrayList; import java.util.List; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.Toast

问题 i have a list of object in an activity in which a button in the same activity adds an object to it on every click i want to be capable to access that list and iterate it from any other activity i made it public but it gave me an error ! package com.fawzyx.movie_rental_store; import java.util.ArrayList; import java.util.List; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.Toast

问题 I'm currently working on a personal project, in this project, the user is asked to create objects under 3 different categories, so after the object is created, there's a method that check's the category of the object and then it adds it to an ArrayList. More Details: the object is called Vehicle, there're three categories: Two wheels, three weels, three wheels. So, when you create a new Vehicle, you'd be asked to specify what kind of vehicles you're creating, say you said two wheels, a method

问题 I have a List<string> of sizes, say XS, S, M, L, XL, XXL, UK 10, UK 12 etc What I want is to force the order to be that of above, regardless of the order of items in the list, I think I need a IComparable operator but unsure. Ideally I want to have another List with the correct order in which it can reference it's 'place' in the list and re-sort itself, if it doesn't exist it will default to A-Z 回答1: Create an array of sizes in the order you want them to be in, then sort the shirts by the

问题 How can I read File 1 and File2 from the below diagram into class objects and write all the instances of the class into a new File containing all the attributes of both File 1 and File 2? I am taking all attributes as an instance of student class as shown below. How to read both file 1 and file2 into one file either as file 3, file 4, or file 5. which format is more feasible to store those attribute, ArrayList or hashmap, and how 来源： https://stackoverflow.com/questions/64858171/how-to-read

问题 I have a List<string> of sizes, say XS, S, M, L, XL, XXL, UK 10, UK 12 etc What I want is to force the order to be that of above, regardless of the order of items in the list, I think I need a IComparable operator but unsure. Ideally I want to have another List with the correct order in which it can reference it's 'place' in the list and re-sort itself, if it doesn't exist it will default to A-Z 回答1: Create an array of sizes in the order you want them to be in, then sort the shirts by the

问题 How can I read File 1 and File2 from the below diagram into class objects and write all the instances of the class into a new File containing all the attributes of both File 1 and File 2? I am taking all attributes as an instance of student class as shown below. How to read both file 1 and file2 into one file either as file 3, file 4, or file 5. which format is more feasible to store those attribute, ArrayList or hashmap, and how 来源： https://stackoverflow.com/questions/64858171/how-to-read