1	// Example 3.3 joi/examples/BreakAndContinueDemo.java
     2	//
     3	//
     4	// Copyright 2003 Bill Campbell and Ethan Bolker
     5	
     6	public class BreakAndContinueDemo
     7	{
     8	    private static Terminal t = new Terminal();
     9	
    10	    public static void main( String[] args ) 
    11	    {
    12	        t.println("invoking loop");
    13	        BreakAndContinueDemo.loop();  // could say just loop();
    14	        t.println("returned from loop, leaving main");
    15	    }
    16	
    17	    private static void loop()
    18	    {
    19	        t.println("starting infinite loop");
    20	        while( true ) {
    21	            String command = t.readWord(
    22	                "normal, break, continue, return, exit, oops ? > ");
    23	            if (command.startsWith("n")) {
    24	                t.println("normal flow of control");
    25	            }
    26	            if (command.startsWith("b")) {
    27	                t.println("break from looping");
    28	                break;
    29	            }
    30	            if (command.startsWith("c")) {
    31	                t.println("continue looping");
    32	                continue;
    33	            }
    34	            if (command.startsWith("r")) {
    35	                t.println("return prematurely from loop method");
    36	                return;
    37	            }
    38	            if (command.startsWith("e")) {
    39	                t.println("exit prematurely from program");
    40	                System.exit(0);
    41	            }
    42	            if (command.startsWith("o")) {
    43	                t.println("program about to crash ...");
    44	                Terminal foo = null;
    45	                foo.println("crash the program");
    46	            }
    47	            t.println("last line in loop body");
    48	        } 
    49	        t.println("first line after loop body");
    50	        t.println("returning normally from loop method");
    51	    }
    52	}