¡@
java Programming Glossary: dosomethingwithCan one do a for each loop in java in reverse order? http://stackoverflow.com/questions/1098117/can-one-do-a-for-each-loop-in-java-in-reverse-order
Use of '? extends ' and '? super ' in Collection generics [duplicate] http://stackoverflow.com/questions/12604477/use-of-extends-and-super-in-collection-generics to add . For example take the following code public void doSomethingWith List extends Number numbers numbers.add Integer.valueOf 0 Won't.. won't compile because both of these method calls are legal doSomethingWith new ArrayList Integer doSomethingWith new ArrayList Double What.. calls are legal doSomethingWith new ArrayList Integer doSomethingWith new ArrayList Double What you can do is read elements from the..
&& (AND) and || (OR) in IF statements http://stackoverflow.com/questions/1795808/and-and-or-in-if-statements is not null or empty you can write if str null str.isEmpty doSomethingWith str.charAt 0 or the other way round if str null str.isEmpty.. if str null str.isEmpty complainAboutUnusableString else doSomethingWith str.charAt 0 If we hadn't 'short circuits' in Java we'd receive..
Is there a way to access an iteration-counter in Java's for-each loop? http://stackoverflow.com/questions/477550/is-there-a-way-to-access-an-iteration-counter-in-javas-for-each-loop a way in Java's for each loop for String s stringArray doSomethingWith s to find out how often the loop has already been processed.. i loop is the construct int i 0 for String s stringArray doSomethingWith s i the only way to have such a counter available in a for each..
Does setting Java objects to null do anything anymore? http://stackoverflow.com/questions/850878/does-setting-java-objects-to-null-do-anything-anymore partway through the scope . For example BigObject obj ... doSomethingWith obj obj null explicitly set to null doSomethingElse The rationale..
|