Java 归档 - Page 47 of 655

Can (a = = 1 \ u0026 \ u0026 a = = 2 \ u0026 \ u0026 a = = 3) be evaluated as true in Java?

We know it can in JavaScript. But is it possible to print a "success" message under the conditions given below in Java……

Java

2020-09-15

Java – Android flood filling algorithm

Who knows an iterative and effective flood filling algorithm? Or is there a way to implement recursive filling algorit……

Java

2020-09-15

Java – hibernate sequence does not exist

I tried to upgrade hibernate from 4 to 5.0 in my project using spring version 4.2 After upgrading, when I call the upd……

Java

2020-09-15

Java array, NullPointerException?

I declare two cards: Card card1 = new Card('3',Card.Suit.clubs); Card card2 = new Card('T',Card.Suit.diamonds); This w……

Java

2020-09-15

The java socket swingworker is running but has not received or transmitted a message

A few days ago, I tried to create a server - client or client server as an experiment to learn about sockets using thr……

Java

2020-09-15

Java – remove duplicate values from ArrayList

I have a string ArrayList in which I add some duplicate values I just want to delete duplicate values, so how to delet……

Java

2020-09-15

Java – sort rows by column in JTable

When you click a column heading on JTable, it sorts the rows alphabetically This applies to all my columns except one ……

Java

2020-09-15

Java – the right way to update images using jlabels

I'm creating a GUI, and it's a fairly new swing and AWT I'm trying to create a GUI, set the background as an image at ……

Java

2020-09-15

Java – this view is not constrained

I received the following error, I used Android studio 2.2 preview 3 I searched Google but couldn't find any resources ……

Java

2020-09-15

Java – Android gets the date 7 days ago (one week)

How to get the date in android in this format within the previous week: SimpleDateFormat dateFormat = new SimpleDateFo……

Java

2020-09-15

Java – face recognition API

Using Java and Android, I tried to find a way to recognize faces with a given picture of the camera Any ideas? Does an……

Java

2020-09-15

Java – what is a stack mapping framework

I've been paying attention to Java virtual machine specifications (JVMs) recently, trying to better understand how my ……

Java

2020-09-15

java – Google Guava vs. Apache Commons

I was looking for a bidirectional map implementation in Java and came across these two libraries: >Google guava (fo……

Java

2020-09-15

Java – minimize the jinternal framework without clicking a button

Is there any way to minimize / maximize jinternalframe without clicking the minimize / maximize button in the upper ri……

Java

2020-09-15

Java keylistener and keybinding

I want to write a calculator and have a problem I have created an action listener for all buttons, and now I want to b……

Java

2020-09-15

Javafx-8 – launching a JavaFX application from another class

I need to start a JavaFX application from another "container" class and call the function on the application, but ther……

Java

2020-09-15

Java – what is the best practice for rounding floating point numbers to 2 decimal places?

See English answers > how to round a number to N decimal places in Java 29 I need to round the floating point value……

Java

2020-09-15

Java – how do I get the start and end ranges from the timestamp list?

I have such a timestamp string: 2016-01-14T22:43:55Z 2016-01-15T00:04:50Z 2016-01-15T00:44:59+08:30 2016-01-15T01:25:3……

Java

2020-09-15

Java – use jinternalframe and some buttons

Can we use jinternalfame with buttons in the main frame? Of course, the framework contains jdesktopane How about this ……

Java

2020-09-15

Java splits strings into arrays

See English answers > java string split removed empty values 6 String values = "0|0|0|1|||0|1|0|||"; I need to put ……

Java

2020-09-15

How to add rows and columns to JavaFX 8 tableview

I saw an example of adding rows to tableview on the Internet, such as using the person class in Oracle documentation B……

Java

2020-09-15

How to add shortcut keys to JButton in Java?

I have a JButton and I want to assign a shortcut to it Just like I press delete it on the keyboard, just click JButton……

Java

2020-09-15

Java – how to insert objects in an ArrayList at a specific location

Suppose I have an ArrayList of an object of size n Now I want to insert another object at a specific location, assumin……

Java

2020-09-15

What is a native implementation in Java?

See English answer > what is the native keyword in Java for? 9 public native int hashCode() protected native Object……

Java

2020-09-15

Java – hibernate composite key

Is it necessary to map the composite ID to the class? Can you do this? <composite-id> <key-property=..../&g……

Java

2020-09-15

Erlang processes and Java threads

I'm reading "elixir in action" book by SA š a Juri ć, And in the first chapter: Isn't that true for Java threads? I me……

Java

2020-09-15

Java – algorithm of 2D ray tracker

I want to write a programmed raytracer in Java for presentation purposes and give a general ray tracing presentation (……

Java

2020-09-15

Using java_ Opts env variable running Java is invalid

In the shell script, I set up Java_ Opts environment variable (to enable remote debugging and increase memory), and th……

Java

2020-09-15

When JavaMail is executed, all jframes are frozen

I develop the program of automobile management system Then, when the car comes in and drives, I want to send an email ……

Java

2020-09-15

Java – error: unable to find or load the main class in the IntelliJ ide

I'm a beginner in Java. I'm trying to run my code using IntelliJ. I just installed JDJ 1.7 as my ide The following cod……

Java

2020-09-15

How to convert Java result sets to JSON?

I used the MySQL query of JDBC connector to get a result set So my job is to convert the result set to JSON format So ……

Java

2020-09-15

Java replacement regular expressions do not work properly

Why doesn't this line of code work? It should replace all punctuation with nothing m = m.replace("[\\?\\.;:'\"]","") A……

Java

2020-09-15

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Can (a = = 1 \ u0026 \ u0026 a = = 2 \ u0026 \ u0026 a = = 3) be evaluated as true in Java?

Java – Android flood filling algorithm

Java – hibernate sequence does not exist

Java array, NullPointerException?

The java socket swingworker is running but has not received or transmitted a message

Java – remove duplicate values from ArrayList

Java – sort rows by column in JTable

Java – the right way to update images using jlabels

Java – this view is not constrained

Java – Android gets the date 7 days ago (one week)

Java – face recognition API

Java – what is a stack mapping framework

java – Google Guava vs. Apache Commons

Java – minimize the jinternal framework without clicking a button

Java keylistener and keybinding

Javafx-8 – launching a JavaFX application from another class

Java – what is the best practice for rounding floating point numbers to 2 decimal places?

Java – how do I get the start and end ranges from the timestamp list?

Java – use jinternalframe and some buttons

Java splits strings into arrays

How to add rows and columns to JavaFX 8 tableview

How to add shortcut keys to JButton in Java?

Java – how to insert objects in an ArrayList at a specific location

What is a native implementation in Java?

Java – hibernate composite key

Erlang processes and Java threads

Java – algorithm of 2D ray tracker

Using java_ Opts env variable running Java is invalid

When JavaMail is executed, all jframes are frozen

Java – error: unable to find or load the main class in the IntelliJ ide

How to convert Java result sets to JSON?

Java replacement regular expressions do not work properly

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