Recent questions tagged java

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java - Creating a GUI-based Chronometer (or Stopwatch)

What I took some time to work on is a program showing time elapsed, or time remaining, from where the user ... in Java games, for example? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Wanted to make an object bounce inside a circle, ended up making the object move along the rim of the circle

Here's the code in question: public void calculate() { // Center of circle is at (250, 250). //THIS ... help is appreciated. Thanks in advance. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Jframe not the right size when its executed, any reason why?

I am making a game but whenever i run the second jFrame I have to resize it in order to get the right ... // End of variables declaration } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Jpanel resize on repaint

i am having a scaling operation performed in the below code. The two sliders in the form are X and Y ... // End of variables declaration } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Difference in time - from before midnight to after midnight without date

I am struggling to calculate time when going after midnight: String time = "15:00-18:05"; //Calculating OK // ... out.println("dif2: "+tot); See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Android: how do I get SearchView close button to return the setQueryHint()?

I have a Search icon in my toolbar that searches a RecyclerView list. Pic 1: When the icon is clicked ... super.onCreateOptionsMenu(menu); } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Selenium invisibilityOf(element) method throwing NoSuchElementException + WebDriverWait.ignoring(NoSuchElementException.class) is not working

This query consists of 2 related questions. I need to wait for an element to be invisible before I go to ... in advance for your answers. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - JComboBox Action listener

I'm having this problem. I have multiple JComboBoxes (5 total). To each comboBox I add an ActionListener, ... a variable number of comboboxes. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Adding an element inside a wildcard type ArrayList

I am trying to add an element in a list where the list type parameter is a wildcard that extends Question ArrayList< ... And how would I fix it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - What is the difference between using @XmlElement before field and before getter declaration?

I can declare JAXB element in two ways: @XmlElement public int x; or private int x; @XmlElement public ... difference between these two ways? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How can I get Chinese words using Google API with JSON?

I'm using the following link. But, the result is not Chinese. My server is Amazon Web Services (AWS). See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Drag a painted Shape

The Shape interface allows you to create shapes using different classes. In the code below I create shapes using 3 ... createAndShowGUI() ); } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - JComboBox to list age

Purpose: JComboBox to list down ages that a user can select I realize that I need an array of integers. What ... from 1-100 in sequential order. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to set the ActionBar title in middle instead of the default left aligned position?

Trying to set the ActionBar title in middle instead of the default left aligned position. To do so, based on other ... and how to fix this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Simple program with KeyAdapter can't register single keys after pressing down several. Code solution?

I'm just trying to get the basics down when it comes to simple drawing programs. I have a program that draws a ... { e.printStackTrace(); } } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Enable input file camera on android webview

I am creating a webview, to load an external website. On this site I have a form with an input ... webSettings.setJavaScriptEnabled(true); } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Large gap between JTables

The below is on the way to providing the results I am looking for, but unfortunately when this displays there is ... in "Draws" is unrelated. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Cannot resolve symbol showsoftinput

I'm trying to force the numeric keypad to show when my activity and EditText load. It seems there's a ... seem to be deprecated or anything. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Getting org.hibernate.MappingException: No Dialect mapping for JDBC type: -4 exception?

I am getting following exception at query.list() line: org.hibernate.MappingException: No Dialect mapping for JDBC ... thanks in advance... See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Jasper Report : Document root element "jasperReport", must match DOCTYPE root "null"

I have designed jasper report using iReport version (4.7.1). Through iReport it works fine. When I called from java servlet ... " width="144" height="20" forecolor="#FFFFFF"/> <tex...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Getting duration of 2 times

How can I get the duration of two Strings in the format YYYYMMDDTHHMMSS? I′m trying with using the Calendar class and checking ... )"); } } } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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702 views

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java - How to display Arabic strings from RTL in PDF generated using itext 7 API?

I'm struggling with this problem for hours now but I can't find a way out, the problem is that: I wrote ... a solution using itext 7 version. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - how the subString() function of string class works

please see the following code. String s = "Monday"; if(s.subString(0,3).equals("Mon"){} String s2 = new ... line 2 or 4 also please correct.. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How can I find the sum of two numbers which are in String variables?

In this code fragment, I can't sum a and b: String a = "10"; String b = "20"; JOptionPane.showMessageDialog(null ... and b and output 10+20=30? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Positioning of components (how to place a few buttons center screen same size)

solid, recommended way of placing components exactly where wanted on a JFrame? In my case I have a simple Jframe ... . Thanks for any direction. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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521 views

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java - Spring-Data-JPA ManyToMany relationship with extra column

I've been struggling to make a many to many relationship with an additional column in the link table. ... would be really appreciated. Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - SQLException: Invalid Column Name...?

I have a JSP file which I am deploying within a Java Project with the help of Eclipse, Maven, and Tomcat ... .valueOf(personId).intValue()); See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Howto deserialize field that is passed either as a single Object or as a list of Objects with GSON?

I have successfully used GSON to convert a JSON to a single Object and to convert JSON to a list of objects ... when it is not available Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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