Probable Prime using Java Big Integer

BigInteger prime = BigInteger.valueOf(0);
for (int i = 0; i < n; i++) {
    prime = prime.nextProbablePrime();
}
System.out.println(prime.intValue());

Most Efficient Code for Nth Prime

public static int nthprime(int n) {
if (n == 1) return 2;
if (n == 2) return 3;
int limit, root, count = 1;
limit = (int)(n * (Math.log(n) + Math.log(Math.log(n)))) + 3;
root = (int) Math.sqrt(limit) + 1;
limit = (limit - 1) / 2;
root = root / 2 - 1;
boolean[] sieve = new boolean[limit];
for (int i = 0; i < root; ++i) {
if (!sieve[i]) {
++count;
for (int j = 2 * i * (i + 3) + 3, p = 2 * i + 3; j < limit; j += p) {
sieve[j] = true;
}
}
}
int p;
for (p = root; count < n; ++p) {
if (!sieve[p]) {
++count;
}
}
return 2 * p + 1;
}

CSS Element Full Rotation

/* rotation animation */
@-webkit-keyframes rotate {
  from { -webkit-transform:rotate(0deg); }
  to { -webkit-transform:rotate(360deg); }
}

@-moz-keyframes rotate {
  from { -moz-transform:rotate(0deg); }
  to { -moz-transform:rotate(360deg); }
}

@-ms-keyframes rotate {
  from { -ms-transform:rotate(0deg); }
  to { -ms-transform:rotate(360deg); }
}

@-o-keyframes rotate {
  from { -o-transform:rotate(0deg); }
  to { -o-transform:rotate(360deg); }
}

.rotating {
  -webkit-transform-origin: 50% 50%;
  -webkit-animation-name: rotate;
  -webkit-animation-duration: 1s;
  -webkit-animation-iteration-count: infinite;
  -webkit-animation-timing-function: linear;
  -moz-transform-origin: 50% 50%;
  -moz-animation-name: rotate;
  -moz-animation-duration: 1s;
  -moz-animation-iteration-count: infinite;
  -moz-animation-timing-function: linear;
  -ms-transform-origin: 50% 50%;
  -ms-animation-name: rotate;
  -ms-animation-duration: 1s;
  -ms-animation-iteration-count: infinite;
  -ms-animation-timing-function: linear;
  -o-transform-origin: 50% 50%;
  -o-animation-name: rotate;
  -o-animation-duration: 1s;
  -o-animation-iteration-count: infinite;
  -o-animation-timing-function: linear;
}

Clean Up Email

[from:noreply* OR from:do-not-reply* OR from:donotreply* OR from:notification*]
[from:news* OR from:digest* OR from:auto* OR from:reports* OR from:*mailer*]

io to nio

File folder=new Folder("D:\\");

File[] files = folder.listFiles(new FilenameFilter() {
public boolean accept(File dir, String name) {
return name.toLowerCase().endsWith("" + FILE_EXT + "");
}
});

Path dir=Paths.get("D:\\");
DirectoryStream<Path> stream = Files.newDirectoryStream(dir, "*.{" + FILE_EXT + "}");

Base64

Base64.encodeBase64String(input.getBytes(charset));

Quick System.out.println()

static<T> void z(T arg) { System.out.println(arg); }
use z(object)
buzz around! dump text, write to console, overflow the terminal, debug code