⚫ To use the String class to process fixed strings (§7.2). ⚫ To use the Character class to process a single character (§7.3). ⚫ To use the StringBuffer class to process flexible strings (§7.4). ⚫ To use the StringTokenizer class to extract tokens from a string (§7.5). ⚫ To know the differences among the String, StringBuffer, and StringTokenizer classes (§7.2-7.5). ⚫ To use the JDK 1.5 Scanner class for console input and scan tokens using words as delimiters (§7.6). ⚫ To input primitive values and strings from the keyboard using the Scanner class (§7.7). ⚫ To learn how to pass strings to the main method from the command line (§7.8)