Thread: case

Please post your code correctly using code or highlight tags which are explained near the top of this link.

The main method is the entry point for a program in Java and if it isn't there it will get mad at you. Create the main method and then use the writeoutput method inside of it.

here is the exact book name with all the info:

absolute java
by: Walter Savich

page: 210

this page has a code that they said works but it has no main, What do i do?!

The purpose of Chapter 4 is to introduce and explain the construction and usage of multiple classes in one program. At this point in the book, the student should discover that the main() method may be contained in another class, often called ClassNameDemo in this book.

here is the new code and problem:

import java.util.scanner;
{
public static void main (String[] args)
{
int bottle;
int bottlezero;
int i;
int bottletens;
int bottleones;
String bottleword;
void writeoutput();
{

Scanner scannerObject = new Scanner(system.in);
System.out.println("how many bottles of beer?");

bottle = scannerObject.nextInt();

if (bottle <= 0);
{
bottle = 0;
}

if (bottle > 99);
{
bottle = 99;
}

bottletens = bottle/10;
bottlleones = bottle%10;

for (i = bottle; i > 0; i--)
{

System.out.println(i + "bottles of beer on the wall, " + i + " bottles of beer!");
System.out.println("you take one down pass it around, " + (i - 1) + "bottles of beer on the wall!");
}

System.out.println("the song is done");
}
}
public String bottlewordString(int bottleNumber)
{
if (bottle < 20)
{
switch (bottlezero)
{
case 1:
return "one";
case 2:
return "two";
case 3:
return "three";
...
...
case 19:
return "nineteen";
default:
System.out.println("please enter a different number");
System.exit(0);
return "error"; //to keep the compiler happy
}
}
else
{
switch (bottletens)
{
case 2:
return "twenty";
...
case 9:
return "ninety";
default:
System.out.println("please enter a different number");
System.exit(0);
return "error"; //to keep the compiler happy
}
switch (bottleones)
{
case 1:
return "one";
case 2:
return "two";
case 3:
return "three";
...
case 9:
return "nine";
default:
System.out.println("please enter a different number");
System.exit(0);
return "error" //to keep the compiler happy
}
}
}
}

--- Update ---

void writeOutput();
^
illegal start of expression

its doing the same thing

is the void writeOutput() neccesary?

then please tell me where i should put the part out of the main

i have been trying to do this for a while now and i just wanted to know if that part was necessary because i never used it before, i have written codes before, just not using that so i wanted to see if i could do the same thing here aswell.

btw i am cool with u anyway.

so, move it to right after the main? right before the switch statement?

--- Update ---

inbetween those right?

speak english please, i am not understanding what u said

Originally Posted by Ada Lovelace

Then put a comment - then put all the code for the other function
including the parameter header you wrote for it - get rid of the semicolon.
Do that, then if you have more problems by all means ask.

Wishes Ada xx

this is what i am not really understanding

thanks for helping me understand, i really appreciate it

btw - i will message again if i need anymore help

Originally Posted by lucas29

here is the new code and problem:

import java.util.scanner;
{
int bottle;
int bottlezero;
int i;
int bottletens;
int bottleones;
String bottleword;
void writeoutput();
{

Scanner scannerObject = new Scanner(system.in);
System.out.println("how many bottles of beer?");

bottle = scannerObject.nextInt();

if (bottle <= 0);
{
bottle = 0;
}

if (bottle > 99);
{
bottle = 99;
}

bottletens = bottle/10;
bottlleones = bottle%10;

for (i = bottle; i > 0; i--)
{

System.out.println(i + "bottles of beer on the wall, " + i + " bottles of beer!");
System.out.println("you take one down pass it around, " + (i - 1) + "bottles of beer on the wall!");
}

System.out.println("the song is done");
}

public String bottlewordString(int bottleNumber)
public static void main (String[] args)
{
{
if (bottle < 20)
{
switch (bottlezero)
{
case 1:
return "one";
case 2:
return "two";
case 3:
return "three";
...
...
case 19:
return "nineteen";
default:
System.out.println("please enter a different number");
System.exit(0);
return "error"; //to keep the compiler happy
}
}
else
{
switch (bottletens)
{
case 2:
return "twenty";
...
case 9:
return "ninety";
default:
System.out.println("please enter a different number");
System.exit(0);
return "error"; //to keep the compiler happy
}
switch (bottleones)
{
case 1:
return "one";
case 2:
return "two";
case 3:
return "three";
...
case 9:
return "nine";
default:
System.out.println("please enter a different number");
System.exit(0);
return "error" //to keep the compiler happy
}
}
}
}
}

--- Update ---

void writeOutput();
^
illegal start of expression

this is the new code and it says that it can't return a value from method whos type is void, on all the seven, error and al the rest in the switch statements