Details: Java 6, Apache Commons Collection, IntelliJ 12. Update/Answer: It turns out that IntelliJ 12 supports Java 8, which supports lambdas, and is "folding" Predicates and displaying them as lambdas. Below is the "un-folded" code.

Feb 3, 2010 · Since Java 8 there is a Function<T, R> interface , which has method . R apply(T t); You can use it to pass functions as parameters to other functions. T is the input type of the function, R is the return type. In your example you need to pass a function that takes Component type as an input and returns nothing - Void.

Nov 15, 2013 · In Java 8, Streams Reducer works as a function which takes two values as input and returns the result after some calculation. This result is fed into the next iteration. In case of the Math:max function, the method keeps returning the maximum of two values passed and in the end you have the largest number in hand.

Java actually has no modulo operator the way C does. % in Java is a remainder operator. On positive integers, it works exactly like modulo, but it works differently on negative integers and, unlike modulo, can work with floating point numbers as well.

Function<Integer,Function<Integer,Integer>> mutiply = a->{ return b -> a*b; }; Let's Simplify and understand the above method. The Above method accepts only One integer Argument and returns another function with one parameter a as the default value and b as a variable.

Jan 7, 2009 · comes from the java.lang.Comparable interface, implemented to compare this object with another to give a negative int value for this object being less than, 0 for equals, or positive value for greater than the other. This is the more convenient compare method, but must be implemented in every class you want to compare. compare(T obj1, T obj2)

Sep 22, 2014 · In Java the Math#log(double) function calculates the natural logarithm. So you can use this to calculate the logarithm to a given base b: So you can use this to calculate the logarithm to a given base b:

Jan 2, 2010 · Exponentiation in Java. As for integer exponentiation, unfortunately Java does not have such an operator. You can use double Math.pow(double, double) (casting the result to int if necessary). You can also use the traditional bit-shifting trick to compute some powers of two. That is, (1L << k) is two to the k-th power for k=0..63. See also

Is it possible to set the default method parameter values in Java? Example: If there is a method public int doSomething(int arg1, int arg2) { //some logic here return 0; } is it possible to m...

Thanks to Java 8 you don't need to do the steps below to pass a function to a method, that's what lambdas are for, see Oracle's Lambda Expression tutorial. The rest of this post describes what we used to have to do in the bad old days in order to implement this functionality.