包含标签：Java 的文章
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Java – Android architecture blueprint “todo MVP dagger”, where is @ provides for tasksrepository?
View the Android architecture blueprint "todo MVP dagger" here: https://github.com/googlesamples/android-architecture.…… -
Java – the value passed by the unit test to the static method
Example code: class MyClass { public void myMethod(Request request) { Item item = getItem(); ItemU…… -
Java bitwise “&” on integer
I have the following: int a = 10001000; int b = 10000000; I want the following output: (a&b) = 10000000; But my p…… -
How to create subclasses so that parameters belong to subclass types in Java
I have an abstract parent class animal: public abstract class Animal { public abstract <T extends Animal> T …… -
Ui5 – technical part – signature board
2.Javascript 1 jQuery(function() { 2 sap.ui.core.Control.extend(‘SignaturePad‘,{ 3 Metadata: { 4 …… -
Java lambda expression: incompatible type: error return type in lambda expression
I have the following worklists, each of which is a list of profits and difficulties: List<List<Integer>> j…… -
Dplyr: select all variables except those contained in the vector
This should be a simple question, but I'm trying I have a variable name vector that I want to exclude from the data fr…… -
Java – warning: unclosed file of type ‘[io. Realm. Orderlistrealmproxy]’; These types are not annotated
What is wrong?! Solution This is because you are using list < > instead of realmlist < > you extend realmo…… -
Java reactor: how to generate flux from stdin?
I want to read user generated messages from stdin asynchronously Flux.from(stdinPublisher()) .subscribe(msg ->…… -
How to properly close JavaFX alerts / filechooser, etc
I am looking at this problem JavaFX show dialogue after thread task is completed, but my problem is just the opposite …… -
Java recursion does not iterate over all top-level elements
I face the problem of recursion I have an object that contains its own list. Each object in the list can save its own …… -
For loop to Java 8 stream foreach()
See English answers > break or return from Java 8 stream for each? 11 If any value does not exist, it immediately r…… -
java – Guice Bind Generic Types
Is there any way to bind the generic type of the following type: public interface A<T extends Number> { void p…… -
Java – how to short circuit when calculating duplicate values between two lists?
I have 2 lists. I need to calculate / check the duplicate elements in list a that match the elements in List B in the …… -
Java – is it possible to shallow copy singleton class objects?
Using the clone method, can we get many instances of a class that has become a singleton? In addition, is it necessary…… -
PAT A1001-A1004
A1002 ： A+B for Polynomials (25 point(s)) The key to solving this problem is the condition given by the problem: the …… -
How do I convert numbers from double to int without rounding?
I want to calculate how many columns can fit in the container First, I calculate how many columns can fit, and then ca…… -
Why do two java files that differ only in comments produce different class files?
I have one named one Java file, which has only one comment line I compile it to generate the class file one Class and …… -
Java 9’s new docs structure – where are the “old” Java packages?
I'm used to accessing Java se documents from the following links, where I can search for Java awt,java. Util and other…… -
Java – does referencing array indexes cause memory leaks?
I'm reading "item 6: eliminating obsolete object references" in the second edition of effective Java The following is …… -
Collections – java8 converts lists to map >
I have a list < person > object and want to convert it to map < integer. The keyword of the list < person …… -
Java – cannot use paths Get() loads files from Maven resources
I apologize for this seemingly simple and almost stupid problem, but I spent a lot of time fixing it without much succ…… -
Java – convert the 3D world (arcore anchor / pose) to the corresponding 2D screen coordinates
I am trying to achieve this transformation Given the anchor pose in arcore, how can the corresponding 2D coordinates b…… -
Java 8 groupby one field and then maps to multiple fields
I have an object structure like this class Person{ String userId; String firstName; String lastName; Set&l…… -
Design pattern course design pattern intensive lecture 7-3 source code analysis of builder pattern (JDK + guava + Spring + mybaties)
StringBuilder public synchronized StringBuffer append(Object obj) { super.append(String.valueOf(obj)); return this…… -
How to assign incremental values to lists in Java 8
Suppose you have a list of objects The list is sorted by one or more fields of the object So according to the sort lis…… -
Java datetimeformatterbuilder with optional mode causes datetimeparseexception
target Provide a flexible parser for localdate instances, which can process input in one of the following formats: >…… -
Java – is it more efficient to scan an array once for multiple predicates or multiple times for a single predicate
I have an int array of 1000 elements I need to extract the sizes of various subgroups in the array (how many are even,…… -
Differences between Java 6 and Java 7 in ArrayList capacity growth
I have a question about how to manage the capacity growth (not size, but capacity) of ArrayList in Java At this time, …… -
. Net – ORM example using a single table instead of a single table for the entire hierarchy?
From http://blogs.tedneward.com/2006/06/26/The +Vietnam+Of+Computer+Science. Aspx start "Developers usually take one o…… -
Java – unit test edge cases using JUnit
I have a utility class called stringprocessor In the breaklongwords () method, zero width spaces will be added to the …… -
Java – decimalformat() and problems with Russian computers
I have a BigDecimal, and I convert it to string to make some modifications DecimalFormat decimalFormat = new DecimalFo……