Recent questions tagged Java

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java - ArrayIndexOutOfBoundsException in ten's complement arithmetic implementation

My code tries to implement an algorithm to take user input for two integer numbers and an operand + or - from ... print(result, operation); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Android Sdk DatePickerFragment and TextView

i got the next problem. I want to pass the date i've entered using my DatePickerFragment to TextView, but i don't ... ; tvDate1.setText(sb); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How I append text to textarea with using swingworker class?

I want to append text in loop with swingworkerclass in java. for ex : while(true) { mytextarea.append("sometext" ... me some code here.Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to calculate sum of all numbers in a string

How do I calculate the sum of all the numbers in a string? In the example below, the expected result would be 4 ... } } System.out.println(sum); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Drawing a Line - Maximum Point

I drew a line that is at an angle based on a slider. I am trying to make the line's end Y coordinate a ... (start2X, start2Y, end2X, end2Y)); } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - format 12 by 12 multiplication table

My program outputs the table like this: 1 2 3 4 5 6 7 8 9 10 11 12 2 4 6 8 10 12 14 16 18 20 22 24 3 6 ... (a*b+" "); } System.out.println(); } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Why does it store or allocate memory for super class variables, in sub class object?

In the following code- class Mammal { String name = "furry "; String makeNoise() { return "generic noise"; } } ... . Is there any use of this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Resizing Path2D circle by clicking and dragging its outer edge

So, when I click and drag a Path2D circle on my JPanel, it is resizing. The problem is that when I initially click-and- ... = false; } } } } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - JLabel won't display image - NullPointerException

this is my first Java GUI program, and really only my second java program, so take it easy on me :) My ... at gui.cards.main(cards.java:28) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How can I split string by a special character and ignore everything inside parentheses?

I want to split the string by "/" and ignore "/" inside the outer parentheses. Sample input string: " ... parentheses, the result is incorrect. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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438 views

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java - Find the mode (most frequent value in an array) using a simple for loop?

How do I find the mode (most frequent value in an array) using a simple for loop? The code compiles with a wrong ... mode++; } } return mode; } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - readLine() loop not exiting until remote client closes connection

I'm having a problem with a Java SocketServer, i'm building a very basic Java handled Web Server. So i'm ... ; }catch(IOException e){} } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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378 views

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java - Error with spring bean

UPDATE: ADD Maven dependecies *UPDATE: this error solved by adding maven depency * Good day. I have this part of ... app, but result is the same See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Update the UI outside the main thread

I am totaly new to android and just want to know if it is any working and possible way to update the UI outside ... getStackTrace(); } } } } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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774 views

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java - Trying to stop swingworker

I have a custom JDialog that pops up when my SwingWorker thread fires up. The dialog just has a JProgressbar and a ... ; } }; worker.execute(); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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526 views

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java - add javax.comm API on a mac

I would like make an java app that communicates with a serial device(handheld scanner) so that the app is ... no win32com in java.library.path See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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638 views

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java - FreeTTS mbrola not able to find path

When I try to use the FreeTTS library I get the error: Could not validate any MBROLA voices at Some/Location/That/ ... if that has any effect.. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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363 views

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java - RowFilter.NumberFilter: can't handle "mixed" concrete number types

Happens if at least one of the values (values == value in RowFilter, value in entry) is a decimal. Here's a ... who didn't warn me here :-) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Unresolved EL expression displaying list on JSP page with Spring MVC

I'm trying to do something really simple. I just want to display a list on a JSP page from in a Spring MVC ... and this is a quick easy fix. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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351 views

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java - static variable vs non static variable

I have defined an object and declared a static variable i. In the get() method, when I try to print the instance and ... new test().get(); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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322 views

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java - Getting a Handler from a Thread from Service to Activity

Situation: activity binds to started foreground service. service hands out local binder to activity. activity gets reference ... ; } } Correct? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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391 views

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java - How to call custome URL action from Form action?

I followed this post and created a custom URL application. The action is getting called but the url shows with ... } } Any suggestion please. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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539 views

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java - How to handle blob with MyBatis?

There is no default handler for java.sql.Blob. The documentation recommends using a byte[] array but I have a ... a custom handler for Blob? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - @Column insertable, updateble don't go well with Spring JPA?

Scenario : I have 3 tables, Offer, Channel and Offer_Channels. Basically Channel is a lookup table, i.e, ... : could not execute statement" See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to post toast from non ui Widget thread

I am trying to post a toast after calling a function from a non UI thread in a widget. I've read multiple ways of doing ... ).show(); } }); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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java - the method in type not applicable for the arguments

I am getting this error message: 2 errors found: Error: The method determineTaxRate(double) in the type ... calculateNetPay()); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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401 views

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java - Parsing comma-separated values containing quoted commas and newlines

I have string with some special characters. The aim is to retrieve String[] of each line (, separated) You ... York 123456 12543-01 Ocean Peter See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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384 views

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java - how to logout using facebook api in android

i am using facebook api for android using facebook developer guide. I was able to implement the login for facebook ... resultCode, data); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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