Need help to write Hangman

[Bremin]

Hello guys, i just registered. I need algorithm to write program which plays Hangman with user in DrJava. Could anyone help me how can i ?

[Fubarable]

This post shows no evidence of your current efforts, nor does it show a specific answerable question. You're going to have to do better if you want to increase your chances of getting help here. You would do well to read the link below on how to ask smart questions.

[JosAH]

That is going to be a 'knitting' program, i.e. everything crammed in one huge method (particularly your main( ... ) method). I wrote a hangman class once; it has six small methods (all less than 10 lines of code). I'm willing to show it to you after you've shown at least a bit of design effort; all you have now is a random selection of a word (in a quite clumsy way, I must say). Your turn.

kind regards,

Jos

[Bremin]

Ok, i have wrote:

import java.util.Scanner;
import java.lang.*;
public class Hangman{
public static void main(String[]args){
Scanner scn =new Scanner(System.in);
System.out.println("Would you like to play Hangman. Press y to play n to quit!!!");
String ch="";
int length=ch.length();


String start = scn.nextLine();
if(start.equals("N") || start.equals("n")){
System.exit(1);
}
else if(start.equals("Y") || start.equals("y")){

int series=(int)(Math.random()*6)+1;
while(start.equals("Y") || start.equals("y")){
switch(series){
case 1:
ch=("thecloser"); break;

case 2:
ch=("survivor"); break;

case 3:
ch=("merlin"); break;

case 4:
ch=("house"); break;

case 5:
ch=("simpsons"); break;

case 6:
ch=("dexter"); break;

case 7:
ch=("friends"); break;
}

length=ch.length();

for(int i=1; i<=length; i++){
System.out.print("_ ");

StringBuffer guess=new StringBuffer(length);
String g2 = "";
String guessCh="";
System.out.println(" guess");
guessCh=scn.next();
if(ch.charAt(i) == guessCh.charAt(0) )
{
g2 = g2+ch.charAt(i);
guess.setCharAt(2*i,guessCh.charAt(0));

}
g2 ="";
System.out.print(guess.toString());
}
}
System.out.println("(You have 10 tries remaining)");
System.out.println(length+" letter");
System.out.println("Please enter your guess");
String guess=scn.next();
}}}

But in output it shows this:
http://imageupload.org/en/file/214864/adsapz.png.html

i fixed it, too. But this crash shows up now :/
http://imageupload.org/en/file/214882/adsapz.png.html
for this code

import java.util.Scanner;
import java.lang.*;
public class Hangman{
public static void main(String[]args){
Scanner scn =new Scanner(System.in);
System.out.println("Would you like to play Hangman. Press y to play n to quit!!!");
String ch="";
int length=ch.length();
int i=0;

String start = scn.nextLine();
if(start.equals("N") || start.equals("n")){
System.exit(1);
}
else if(start.equals("Y") || start.equals("y")){

int series=(int)(Math.random()*6)+1;
while(start.equals("Y") || start.equals("y")){
switch(series){
case 1:
ch=("thecloser"); break;

case 2:
ch=("survivor"); break;

case 3:
ch=("merlin"); break;

case 4:
ch=("house"); break;

case 5:
ch=("simpsons"); break;

case 6:
ch=("dexter"); break;

case 7:
ch=("friends"); break;
}

length=ch.length();
for(i=1; i<=length; i++){
System.out.print("_ ");
}
StringBuffer guess=new StringBuffer(length);
String g2 = "";
String guessCh="";
System.out.println(" guess");
guessCh=scn.next();
if(ch.charAt(i) == guessCh.charAt(0) )
{
g2 = g2+ch.charAt(i);
guess.setCharAt(2*i,guessCh.charAt(0));

}
g2 ="";
System.out.print(guess.toString());

}
System.out.println("(You have 10 tries remaining)");
System.out.println(length+" letter");
System.out.println("Please enter your guess");
String guess=scn.next();
}}}