Java 归档 - Page 273 of 655

How do I run the 32-bit API on a 64 bit computer?

I'm writing a Java application that must communicate with it. It must communicate with XBee radio through USB cable To……

Java

2020-03-16

Java – when I need to be in optional Use optional. On orelse() When orelseget()

I need to make a clear explanation for this. Even if I am reading this link about differences, there is no clear defin……

Java

2020-03-16

Java – default expiration time of Google guava cache

I want to know the default expiration policy of guava cache Solution Suppose you're talking about cache builder From G……

Java

2020-03-16

What can be in the parentheses of a Java for loop?

My question is about Java for statements, such as for (int i = 0; i < 10; ++i) {/* stuff */} What I don't understan……

Java

2020-03-16

Java – uses the simulated location without setting it in the settings

I'm writing an application that takes advantage of the location simulation possibilities in Android What I want to ach……

Java

2020-03-16

What is the empty session path in Java – Tomcat?

I read the Apache Tomcat document the day before. I was confused about emptysessionpath As far as I know, if set to tr……

Java

2020-03-16

Java – JUnit test case for database insertion method using DAO and Web Services

I am implementing a university management system based on Web services The system adds some courses to the database He……

Java

2020-03-16

Project Euler #1 in Java

I encountered a problem with this code I don't want to see others, so I want to know what my fault is If we list all n……

Java

2020-03-16

If the string in LISP is a vector, why can’t I use svref to access the first element?

So, I'm trying to learn lisp. I have a problem defining what a string is I'm reading Paul Graham's ANSI Common Lisp. I……

Java

2020-03-16

Java – iterates the results in the list object returned by the hibernate query

I have hibernate query as follows: String MysqL = "SELECT S.col1,S.col2,T.col3,T.col4,T.col5 FROM myT……

Java

2020-03-16

Java – the GUI displays elements only after dragging the window

frame_ref = new Frame("Login"); frame_ref = new Frame("Login"); mainPanel_ref = new Panel(); buttonPan……

Java

2020-03-16

How to use comparable to compare common nodes in a linked list?

I'm using link lists to implement sort lists My node class looks like this public class Node<E>{ E elem; ……

Java

2020-03-16

Java – Jersey 2.2: containerresponsefilter and containerrequestfilter will never be executed

After the getting started guide on the Jersey website: I executed the following build commands: $mvn archetype:generat……

Java

2020-03-16

Use Java 8 to calculate the number of days between two dates, while ignoring some days of the week

I have three methods below The first one is simple It only counts the total number of days However, the second not onl……

Java

2020-03-16

Java – use JSON Org parser parses JSON from httpclient request

I tried to parse JSON using notes proxy and get JSON using Apache httpclient This is the code that returns JSON import……

Java

2020-03-16

Java – possible cause of “StreamCorruptedException: invalid stream header”

I use drools to handle my pricing rules However, when I try to execute the rule, the following exception is thrown: ja……

Java

2020-03-16

Java – why use heaps instead of binary trees when implementing priority queues?

In my opinion, the only advantage of heap over binary tree is to find the smallest item in heap with O (1) rather than……

Java

2020-03-16

Difference between Java ‘assert’ and ‘if() {} else exit;’

What is the difference between Java assert and if () {} exit;? Can I use if () {} else to exit instead of asserting? S……

Java

2020-03-16

What is the difference between the gethost and getauthority methods in the URL class in Java?

I have a series of different forms of strings (URLs): > http：// domain name. anything / anypath > https：// dma……

Java

2020-03-16

Java – is the Cherry Coke list a ‘Coke list’?

resolvent

Java

2020-03-16

Java – delete element from set

I'm trying to delete all strings of uniform length in a group So far, this is my code, but I can't get the index from ……

Java

2020-03-16

Java – what is the difference between passing by reference and calling by reference?

What is the difference between calling by reference and calling by reference in a reference? Solution Java does not pa……

Java

2020-03-16

Java – what does it mean for deprecated methods and how to resolve the resulting errors?

Why do I have a deprecation error on the line containing setwallpaper (BMP), and how to solve it? switch(v.getId()){ ……

Java

2020-03-16

Java – what is the best way to listen for changes in JTable cell values and update the database accordingly?

I am using multiple JTable builds and applications, and I need to detect when cell values change so that I can update ……

Java

2020-03-16