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java.lang.IllegalStateException: Cannot (forward | sendRedirect | create session) after response has
...lled in the very same method.
protected void doXxx() {
out.write("some string");
// ...
forward(); // Fail!
}
The response buffer size defaults in most server to 2KB, so if you write more than 2KB to it, then it will be committed and forward() will fail the same way:
java.lang.Illegal...
How to use conditional breakpoint in Eclipse?
...
1. Create a class
public class Test {
public static void main(String[] args) {
// TODO Auto-generated method stub
String s[] = {"app","amm","abb","akk","all"};
doForAllTabs(s);
}
public static void doForAllTabs(String[] tablist){
for(int i = 0; i<tablist.length;...
How to sort an ArrayList in Java [duplicate]
...ering is a fundamental part of the nature of the objects (like integers or strings), whereas by using a Comparator, you're saying that in this specific context, you want them ordered in a certain way.
– Tom Anderson
Aug 26 '13 at 10:32
...
How to perform a real time search and filter on a HTML table
... this approach because it is quite resource consuming. Put all the refined strings into an array of objects with two fields: a reference to the <tr> DOMElement and the string. This way, on keyup() you search those strings (which is way faster) and have the corresponding rows ready to be manipu...
Confused by python file mode “w+”
...to the top of the file before reading, otherwise you'll just read an empty string
data = f.read() # Returns 'somedata\n'
Note the f.seek(0) -- if you forget this, the f.read() call will try to read from the end of the file, and will return an empty string.
...
What's a concise way to check that environment variables are set in a Unix shell script?
...st variant (using just ?) requires STATE to be set, but STATE="" (an empty string) is OK — not exactly what you want, but the alternative and older notation.
The second variant (using :?) requires DEST to be set and non-empty.
If you supply no message, the shell provides a default message.
The ${v...
Run single test from a JUnit class using command-line
....Result;
public class SingleJUnitTestRunner {
public static void main(String... args) throws ClassNotFoundException {
String[] classAndMethod = args[0].split("#");
Request request = Request.method(Class.forName(classAndMethod[0]),
classAndMethod[1]);
Res...
How to call base.base.method()?
...yword in the children methods though.
public class SuperBase
{
public string Speak() { return "Blah in SuperBase"; }
}
public class Base : SuperBase
{
public new string Speak() { return "Blah in Base"; }
}
public class Child : Base
{
public new string Speak() { return "Blah in Child";...
Ways to iterate over a list in Java
...
So for lists of immutable types like Integer and String it would not be possible to change the contents using for-each or Iterator methods -- would have to manipulate the list object itself to replace to elements. Is that right?
– jacobq
...
PHP “pretty print” json_encode [duplicate]
...(release date 01-Mar-2012).
This should do the job:
$json = json_decode($string);
echo json_encode($json, JSON_PRETTY_PRINT);
See http://www.php.net/manual/en/function.json-encode.php
Note: Don't forget to echo "<pre>" before and "</pre>" after, if you're printing it in HTML to pres...