Thread: Trying to get one line of my string to print and then scramble the code. Cant figure it out.

Hey guys I cant Figure out how to choose the first line of my random string of words and jumble the characters. I have been at it for hours and cant figure it out.
Help would be appreciated.



import java.util.*;
import java.io.*;


public class Proj3{
public static void main (String [] args) throws IOException{

Scanner inFile = new Scanner(new File("words.txt"));
Random r = new Random();
List<String> words = new ArrayList<String>();

while (inFile.hasNext()) {
words.add(inFile.nextLine());
String[] array = words.toArray(new String [0]); //String word = inFile.nextLine();
String test1 = (array[new Random().nextInt(array.length)]);
String[] lines = test1.split("\n");
String firstword = test1.substring(0);


boolean [] used = new boolean [test1.length()];
String jumble = "";
int count = 0;
while (count < test1.length()) {
int index = r.nextInt(test1.length());


jumble = jumble + test1.charAt(index);

count++;


}
System.out.println(test1);


}
}

Welcome to the forum.

Please use code tags when posting code. See the Announcements page if you need hlep.

What does the program do so far? Does it compile and run? Where are you stuck?

Hey thanks for your reply and I will make sure to do that next time.
Right now my program does compile. When run it imports a .txt file of dictionary words, then prints out a random list of the words. What I want is for the program to print out only one random word instead of all of them.

--- Update ---

Anyone have any ideas?

If you want something to happen only once, then inside the body of a loop may not be the best place for that statement.

Move your print statement out of the loop. Don't forget to decide which word to print, since the current method prints them all, you will need some way to choose which word will be the only one printed.

Originally Posted by jps

If you want something to happen only once, then inside the body of a loop may not be the best place for that statement.

Move your print statement out of the loop. Don't forget to decide which word to print, since the current method prints them all, you will need some way to choose which word will be the only one printed.

I cant figure out how to only print one word from the list. I have tried string.split and tokenizer but neither of them seem to work. Some more help would be greatly appreciated.

This program picks a random word from my words.txt file and then prints the word and under it prints the word jumbled. The jumbled word always repeats one character. For example ("door" would scramble to be "rord"). I am not sure how to fi this problem.

import java.util.*;
import java.io.*;
 
 
public class new29{
public static void main (String [] args) throws IOException{
 
Scanner inFile = new Scanner(new File("words.txt"));
ArrayList<String> words = new ArrayList<String>();
 
Random r = new Random();
while (inFile.hasNext())	{
words.add(inFile.next());
}
 String[] array = words.toArray(new String [0]);                             //String word = inFile.nextLine();
String test1 = (array[new Random().nextInt(array.length)]);
 
System.out.println(test1);
 
 
 
String jumble = " ";
int count = 0;
while (count < test1.length())	{
boolean [] used = new boolean [test1.length()];
int index = r.nextInt(test1.length());
 
jumble += test1.charAt(index);
 
count++;
}
System.out.println("word to unscramble: " +jumble);
 
 
	}
}

Your strings are stored in an array.
Arrays are accessed through the index number of their position in the array. Think of it like a train, where the engine is the first element, at position zero. The caboose is the last element, at position length - 1
So an array of 12 elements would have the numbers 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11

myArray[2] would get the third element of the array (0, 1, 2...)

Decide which word (realistically which index of the array) you want to print, and print it, outside the loop.
Search keywords: java array access for more details on arrays.
Show the modified code if you have questions remaining, and remember code tags! Good luck

--- Update ---

Please do not post your question multiple times.
Threads merged