Jay Watson

Why won't it read space?
import java.io.*; public class MorseCode { public static void main(String[] args){ BufferedReader dataIn = new BufferedReader(new InputStreamReader(System.in)); String[] morse = {".- ","-... ","-.-. ","-.. ",". ","..-. ","--. ",".... ",".. ", ".--- ","-.- ",".-.. ","-- ","-. ","--- ",".--. ","--.- ",".-. ","... ","- ","..- ", "...- ",".-- ","-..- ","-.-- ","--.. "," "}; String sentence = ""; System.out.println("Enter a sentence: "); try{ sentence = dataIn.readLine(); }catch(Exception e){ System.out.println("Invalid Input"); } for (int i = 0; i < sentence.length(); i++) { char letter = Character.toUpperCase(sentence.charAt(i)); String word = morse[letter - 'A']; System.out.print(word+"."); } } }


Enter a sentence: G G Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: -33 at MorseCode.main(MorseCode.java:25) --. . Java Result: 1 BUILD SUCCESSFUL (total time: 28 seconds)

It runs. My problem is every time I input a space it gives me an error.

Ulf Dittmer wrote:There may other problems, but instead of "sentence.charAt(0)" you should have "sentence.charAt(i)".

other problems like?

import java.io.*; public class MorseCode { public static void main(String[] args){ BufferedReader dataIn = new BufferedReader(new InputStreamReader(System.in)); String[] morse = {".- ","-... ","-.-. ","-.. ",". ","..-. ","--. ",".... ",".. ", ".--- ","-.- ",".-.. ","-- ","-. ","--- ",".--. ","--.- ",".-. ","... ","- ","..- ", "...- ",".-- ","-..- ","-.-- ","--.. "}; String sentence = ""; System.out.println("Enter a sentence: "); try{ sentence = dataIn.readLine(); }catch(Exception e){ System.out.println("Invalid Input"); } for(int i = 0;i < sentence.length();i++) { [code] String m = morse[sentence.charAt(0) - 'A']; System.out.print(m); } } }

Why is it not working?
String m = morse[sentence.charAt(0) - 'A'];
What is wrong with this line?

I got the program running.It works fine, But is there any other way other than switch statement?

import java.io.*; public class MorseCode { public static void main(String[] args){ BufferedReader BR = new BufferedReader(new InputStreamReader(System.in)); String[] morse = {".- ","-... ","-.-. ","-.. ",". ","..-. ","--. ",".... ",".. ", ".--- ","-.- ",".-.. ","-- ","-. ","--- ",".--. ","--.- ",".-. ","... ","- ","..- ", "...- ",".-- ","-..- ","-.-- ","--.. "}; BufferedReader dataIn = new BufferedReader(new InputStreamReader(System.in)); String sentence = ""; System.out.println("Enter a sentence"); try{ sentence = dataIn.readLine(); }catch(Exception e){ System.out.println("Invalid Input"); } for(int x = 0; x<sentence.length(); x++){ char ch = sentence.charAt(x); switch(ch){ case 'a': case 'A': System.out.println(morse[0]); break; case 'b': case 'B': System.out.print(morse[1]); break; case 'c': case 'C': System.out.print(morse[2]); break; case 'd': case 'D': System.out.print(morse[3]); break; case 'e': case 'E': System.out.print(morse[4]); break; case 'f': case 'F': System.out.print(morse[5]); break; case 'g': case 'G': System.out.print(morse[6]); break; case 'h': case 'H': System.out.print(morse[7]); break; case 'i': case 'I': System.out.print(morse[8]); break; case 'j': case 'J': System.out.print(morse[9]); break; case 'k': case 'K': System.out.print(morse[10]); break; case 'l': case 'L': System.out.print(morse[11]); break; case 'm': case 'M': System.out.print(morse[12]); break; case 'n': case 'N': System.out.print(morse[13]); break; case 'o': case 'O': System.out.print(morse[14]); break; case 'p': case 'P': System.out.print(morse[15]); break; case 'q': case 'Q': System.out.print(morse[16]); break; case 'r': case 'R': System.out.print(morse[17]); break; case 's': case 'S': System.out.print(morse[18]); break; case 't': case 'T': System.out.print(morse[19]); break; case 'u': case 'U': System.out.print(morse[20]); break; case 'v': case 'V': System.out.print(morse[21]); break; case 'w': case 'W': System.out.print(morse[22]); break; case 'x': case 'X': System.out.print(morse[23]); break; case 'y': case 'Y': System.out.print(morse[24]); break; case 'z': case 'Z': System.out.print(morse[25]); break; } } System.out.println("."); } }

I tried assigning x to the switch statement but it just gives me error. Is there any way to use br.readline w/o the try and catch?

The word error is from the catch. I think the reason the word error appears bec. I inputted a character instead of an Integer.
I'm not asking you to do my homework I just need someone to help me.

import java.io.*; public class MorseCode { public static void main(String[] args){ BufferedReader BR = new BufferedReader(new InputStreamReader(System.in)); String[] morse = {".- ","-... ","-.-. ","-.. ",". ","..-. ","--. ",".... ",".. ", ".--- ","-.- ",".-.. ","-- ","-. ","--- ",".--. ","--.- ",".-. ","... ","- ","..- ", "...- ",".-- ","-..- ","-.-- ","--.. "}; String[] letter = {"A","B","C ","D","E","F","G","H","I", "J","K","L","M","N ","O","P","Q","R","S","T","U", "V","W","X","Y ","Z"}; int y=0; String val=""; try { System.out.println("Input: "); val = BR.readLine(); int x =Integer.parseInt(val); }catch(Exception e){ System.out.println("error"); } switch(y){ case 1:System.out.println(morse[0]); break; case 2:System.out.println(morse[1]); break; case 3:System.out.println(morse[2]); break; case 4:System.out.println(morse[3]); break; case 5:System.out.println(morse[4]); break; case 6:System.out.println(morse[5]); break; case 7:System.out.println(morse[6]); break; case 8:System.out.println(morse[7]); break; case 9:System.out.println(morse[8]); break; case 10:System.out.println(morse[9]); break; case 11:System.out.println(morse[10]); break; case 12:System.out.println(morse[11]); break; case 13:System.out.println(morse[12]); break; case 14:System.out.println(morse[13]); break; case 15:System.out.println(morse[14]); break; case 16:System.out.println(morse[15]); break; case 17:System.out.println(morse[16]); break; case 18:System.out.println(morse[17]); break; case 19:System.out.println(morse[18]); break; case 20:System.out.println(morse[19]); break; case 21:System.out.println(morse[20]); break; case 22:System.out.println(morse[21]); break; case 23:System.out.println(morse[22]); break; case 24:System.out.println(morse[23]); break; case 25:System.out.println(morse[24]); break; case 26:System.out.println(morse[25]); break; } } }


Here is the output

compile-single: run-single: Input: QUICK BROWN FOX error BUILD SUCCESSFUL (total time: 50 seconds)

I know there are tons of errors, I need your advice. Please, this is due in 5 hours.

Thanks