To use a keyboard shortcut, hold down one or more modifier keys while pressing the last key of the shortcut. For example, to use the shortcut Command-C (copy), hold down Command, press C, then release both keys. Mac menus and keyboards often use symbols for certain keys, including the modifier keys: 1  Command â.
The syntax of the JavaScript for â¦ in loop is as follows: 1  Iterates through all enumerable properties of an object. 2  Iterates through all used indices of array including all user-defined properties of array object, if any. 3  Thus it may be better to use a traditional for loop with a numeric index when iterating over arrays.
About this tutorial. The two-part Introduction to Java programming tutorial is intended to get software developers who are new to Java technology up and running with object-oriented programming (OOP) and real-world application development using the Java language and platform.ost programming languages include the concept of an array to hold a collection of things, and the Java language is no exception. An array is nothing more than a collection of elements of the same type. You can declare an array in one of two ways: 1  Create it with a certain size, which is fixed for the life of the array.