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Arrays - setup, fill, pass, process, length
this example from a Well House Consultants training course
Source code: Irene.java Module: J050
public class Irene {
/* Java uses true arrays - variables that contain multiple values in successive memory locations all of which occupy the same number of bytes. Which means that you can't extend an array in length once you have it set. However, Java is NOT a statically compiled language where you have to decide how big an array is when you write / build your program - it can decide how much memory to allocate as the program runs, and also set up new arrays during the run - even setting up longer arrays than were set up initially and moving content to the new and longer area (this is NOT shown in this example) */ public static void main(String [] args) { int [] wc = spew(args); // Passing arrays int longest = 0, longposn = 0; for (int i=0; i<wc.length; i++) { // Process an array System.out.print(wc[i]); System.out.print(" "); if (longest < wc[i]) { longest = wc[i]; longposn = i; } } System.out.println(); // Add newline at very end System.out.print("Longest word - "); System.out.print(longest); System.out.println(" characters"); System.out.print("Longest word was "); System.out.println(args[longposn]); } private static int [] spew(String [] words) { int n = words.length; int [] result = new int[n]; // Setting up new array System.out.print("Word count "); System.out.println(n); for (int i=0; i<words.length; i++) { // Fill an array result[i] = words[i].length(); } return result; } } /* Dorothy-2:java grahamellis$ java Irene is a common name in Cumbrian Mythology from the 3rd century BC Word count 12 2 1 6 4 2 8 9 4 3 3 7 2 Longest word - 9 characters Longest word was Mythology Dorothy-2:java grahamellis$ */ Learn about this subject
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