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java.lang.OutOfMemoryError: Java heap space
... would recommend profiling your application to find out why your heap size is being eaten. NetBeans has a very good profiler included with it. I believe it uses the jvisualvm under the hood. With a profiler, you can try to find where many objects are being created, when objects get garbage collected...
PostgreSQL ERROR: canceling statement due to conflict with recovery
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Running queries on hot-standby server is somewhat tricky — it can fail, because during querying some needed rows might be updated or deleted on primary. As a primary does not know that a query is started on secondary it thinks it can clean up (vacuum) old versi...
A complete solution to LOCALLY validate an in-app receipts and bundle receipts on iOS 7
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Here's a walkthrough of how I solved this in my in-app purchase library RMStore. I will explain how to verify a transaction, which includes verifying the whole receipt.
At a glance
Get the receipt and verify the transaction. If it fails, refresh the receipt and ...
How can I avoid Java code in JSP files, using JSP 2?
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The use of scriptlets (those <% %> things) in JSP is indeed highly discouraged since the birth of taglibs (like JSTL) and EL (Expression Language, those ${} things) way back in 2001.
The major disadvantages of scriptlets are:
Reusability: you can't reuse scriptlets.
Repla...
How do I use NSTimer?
...rstly I'd like to draw your attention to the Cocoa/CF documentation (which is always a great first port of call). The Apple docs have a section at the top of each reference article called "Companion Guides", which lists guides for the topic being documented (if any exist). For example, with NSTimer,...
GCC compile error with >2 GB of code
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So, you already have a program that produces this text:
prefactor = +s.ds8*s.ds10*ti[0]->value();
expr = ( - 5/243.*(s.x14*s.x15*csc[49300] + 9/10.*s.x14*s.x15*csc[49301] +
1/10.*s.x14*s.x15*csc[49302] - 3/5.*s.x14*s.x15*csc[49303] -...
and
double csc19295 =...
Why does SSL handshake give 'Could not generate DH keypair' exception?
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The problem is the prime size. The maximum-acceptable size that Java accepts is 1024 bits. This is a known issue (see JDK-6521495).
The bug report that I linked to mentions a workaround using BouncyCastle's JCE implementation. Hopefull...
Convert an ISO date to the date format yyyy-mm-dd in JavaScript
How can I get a date having the format yyyy-mm-dd from an ISO 8601 date?
18 Answers
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py2exe - generate single executable file
I thought I heard that py2exe was able to do this, but I never figured it out. Has anyone successfully done this? Can I see your setup.py file, and what command line options you used?
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how to convert java string to Date object [duplicate]
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edited May 18 '17 at 9:46
Pehlaj - Mobile Apps Developer
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