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Create a folder if it doesn't already exist
...0777 is already the default mode for directories and may still be modified by the current umask.
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What is the status of JSR 305?
...s a reference implementation of the JSR-305 annotations here which is used by many projects, including guava. With maven you can use the JSR-305 reference implementation by adding this to your pom:
<dependency>
<groupId>com.google.code.findbugs</groupId>
<artifactId>...
How to calculate the bounding box for a given lat/lng location?
I have given a location defined by latitude and longitude.
Now i want to calculate a bounding box within e.g. 10 kilometers of that point.
...
git-diff to ignore ^M
...ex
# You should get lots of messages like: "warning: CRLF will be replaced by LF in <file>."
$ git diff --cached --name-only -z | xargs -0 git add
# Commit
$ git commit -m "Fix CRLF"
core.autocrlf is described on the man page.
...
Catching java.lang.OutOfMemoryError?
...the JVM is out of memory in the catch block:
private static final int MEGABYTE = (1024*1024);
public static void runOutOfMemory() {
MemoryMXBean memoryBean = ManagementFactory.getMemoryMXBean();
for (int i=1; i <= 100; i++) {
try {
byte[] bytes = new byte[MEGABYTE*500...
PHP mail function doesn't complete sending of e-mail
...se you are on a shared hosting server, the ports 25 and 587 remain blocked by default. This block is been purposely done by your hosting provider. This is true even for some of the dedicated servers. When these ports are blocked, try to connect using port 2525. If you find that port is also blocked,...
In git how is fetch different than pull and how is merge different than rebase?
...---G remote
merge joins two development histories together. It does this by replaying the changes that occurred on your local branch after it diverged on top of the remote branch, and record the result in a new commit. This operation preserves the ancestry of each commit.
The effect of a merge wi...
How to use Git Revert
...
By way of confirmation, both to the first statement here and to anyone wondering the same thing I just wondered about how it works, you can revert a revert, where there are several new commits since the revert you're revertin...
Parsing IPv6 extension headers containing unknown extensions
...eader but the Next Header value in the current header is
unrecognized by the node, it should discard the packet and send an
ICMP Parameter Problem message to the source of the packet, with an
ICMP Code value of 1 ("unrecognized Next Header type encountered")
and the ICMP Pointer ...
How should I have explained the difference between an Interface and an Abstract class?
...// Implement the same default behavior here
// that is shared by all subclasses.
}
// Each subclass needs to provide their own implementation of this only:
public abstract void checkDBforUser();
}
Now in each child class, we only need to implement one method - the method tha...