Menu.java

package chapter5;


import java.io.IOException;

public class Menu {
    public static void main(String[] args) throws IOException {
        char choice;

        do {

            System.out.println("Help on");
            System.out.println("1. if");
            System.out.println("2. switch");
            System.out.println("3. while");
            System.out.println("4. do while");
            System.out.println("5. do while");
            System.out.println("Choose one");
            choice = (char) System.in.read();
        } while (choice < '1' || choice > '5');

        switch (choice) {
            case '1':
                System.out.println("The if:\n");
                System.out.println("if(condition) statement;");
                System.out.println("else statement;");
                break;
            case '2':
                System.out.println("The switch:\n");
                System.out.println("switch(express) {");
                System.out.println("case constant:");
                System.out.println("    statement sequence");
                System.out.println("    break;");
                System.out.println("    //...");
                System.out.println("}");
                break;
            case '3':
                System.out.println("The while:\n");
                System.out.println("while(condition) statement;");
                break;
            case '4':
                System.out.println("The do-while:\n");
                System.out.println("do {");
                System.out.println("    statement;");
                System.out.println("} while (condition);");
                break;
            case '5':
                System.out.println("The for:\n");
                System.out.println("for(init; condition; iteration)");
                System.out.println("    statement;");
                break;
        }
    }
}