/* Names.java */ import java.io.*; /** The Names class provides a single function, main, that will * perform various manipulations of the name John Fitzgerald Kennedy. * This is a modification of the program on page 43 of Arnow and Weiss. */ class Names { /** Performs various string operations on the name John Fitzgeral Kennedy. * @param arg is not used. */ public static void main(String arg[]) { String first = "John"; String middle = "Fitzgerald"; String last = "Kennedy"; String initials; String firstInit, middleInit, lastInit; firstInit = first.substring(0,1); middleInit = middle.substring(0,1); lastInit = last.substring(0,1); initials = firstInit.concat(middleInit); initials = initials.concat(lastInit); System.out.println() System.out.println(first + " " + middle + " " + last + " "); System.out.println(initials); System.out.println(last + ", " + first + " " + middle); System.out.println(last + ", " + first + " " + middleInit +"."); System.out.println(first.toUpperCase() + " " + last.toUpperCase); System.out.println(first + " equals john is " + first.equals("john")); System.out.println(first + " equals john (ignoring case) is " + first.equalsIgnoreCase("john")); System.out.println("The character at index 3 in " + middle + " is " + middle.substring(3,1)); System.out.println("The index of \"gerald\" within " + middle + " is " + middle.indexOf("gerald")); System.out.println("The index of \"gerald\" within " + last + " is " + last.indexOf("gerald")); System.out.println(); } }
