Recent questions tagged java

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java - Can't insert Tabs and Spaces into PDBox PDF document

I want to print this in a pdf created by PDFBOX. It wont let me insert tabs and spaces because the font does ... .java:114) ... 62 more 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 - Running command after sudo login

I'm trying to execute below code to execute sudo commands but I do not know how execute commands after sudo login String[] ... ()); break; } } } 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 replace multiple substring of a string at one time?

I hope to replace two substring in the String s, so I write the following code. I think the efficiency is too ... "%Content%","made by Paul"); 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 - spring @Cacheable with Ehcache, spel find null for valid object

I have a similar problem which but sometimes it works. The error described only happens once in a while. I ... debug> <optimize>true</optimize> 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 - Right way to configure Glassfish SSL certificate nickname?

Glassfish lets to set the SSL certificate nickname through its admin console as it is highlighted in the ... of setting certificate nickname? 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 - Space button size on my layout keyboard won't resize

I am working on a typing app which includes the a keyboard but I have found a bit hard to re-size the space ... please just let me know.. :) 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 - Printable prints BufferedImage with incorrect size

So yeah what I am trying here is printing a BufferedImage, all works just fine until you see the outcome. The ... pixels. That would be great. 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 does next() method on iterators work?

I have a doubt with the next() method on iterators. If I have as a part of my code this lines (with ... nothing with the element at index 0? 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 are bitwise operations?

I'm in the middle of studying the book named Beginning Android Games. One thing that I noticed was this: int ... knows what's happening here? 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 - in matcher.replace method,how to limit replace times?

in matcher.replace method,only has: replaceFirst() and replaceAll() two methods i want limit replace 3 times,how to do? ... ); } } } 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 - .drawLine() issues and buffered image

I have a paint programme and i have all the buttons and sliders done however i am having a problem with the actual ... x, x) repaint(); } 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 hide the command line in IntelliJ IDEA console output?

I am new to intellij IDE and trying to execute a class file and i have following issue when i execute ... the locations in my intellij output 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 - why allocation phase can be increased if we override finalize method?

I have heard that in Joshua Bloch book written that allocation and memory collection might be increased to 430 ... phase can be increased? 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 - Vibrate with duration and pattern

I am working on a simple plugin. Now I am trying to add a vibrate property. But this code is not working. ... ; #endif } 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 - JSF 2 - f:selectItems with a Date keyed Map

The below selectItems is fed from a Session Scoped Map. When the user clicks the Submit button, it is supposed to ... = dateMap; } } 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 - Speeding up the Android build process

This is a real noob question. I work for a company that makes 100's of apps that use much of the ... ? Any suggestion would be appreciated. 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 send and display QRCode image from action class to JSP in Struts 2

I am submitting a JSP form with a string and on submit I am calling a Struts 2 action. In that action I am ... JSP. <s:property value="QRImg"/> 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 - DecimalFormat variable group size

I've researched the subject somewhat before posting the question, but I couldn't find the answer. Here is what I'm trying to ... ("^ ", "0 ")); 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 return a specific element of an array?

I want to return odd numbers of an array yet Eclipse doesn't seem to accept my return array[i]; code. I ... numbers, I also add them together. 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 - Johnson Trotter Algorithm

Overview: I am trying to implement the Johnson Trotter Algorithm in Java so that I can solve a problem on ... Thanks. Sorry for long post. 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 - Appending data in an Excel file

I am trying to write a program that will append data to an Excel file in Java. I got up to the following code. ... (); workbook.close(); } } 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 - Delete Last Node of a Linked List

I am practicing working with Linked List Nodes and have come upon a problem I don't know how to answer. How do ... ; temp = temp.getNext(); } 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 - Why doesn't the ball show up in the frame if I add the ball after the for loop?

The program makes a ball glide across from top left to bottom right and works. But if I were to shift the line frame. ... y, 100, 100); } } } 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 - Creating file on Windows 7 causes "Access denied" exception

I have a Java application were the user can create a text file and save it wherever he wants on his computer ... code, or something like that ? 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 String Resource Superscript

I have a string resource file, which I want to pull strings from and I want one of the strings to ... strings from the resource string file. 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 - SWT Exception when running jar: Exception in thread "main" org.eclipse.swt.SWTException: Invalid thread access

When executing my jar from terminal I am getting the following: ***WARNING: Display must be created on main thread ... (){ return result; } } 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 execute query with union in hibernate?

Hibernate doesn't support union ,so i would like to run sql separately. but finally how to combine those values ... to combine those values ? 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 - Draw the line on the JPanel when dragging the mouse

I want to draw 2 (or more ) lines on JPanel when the mouse drags. When i use super.paintComponent(g) in my code, ... setVisible(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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