Java loop question ?

SUNIL GUTTA

13y3.4kJava

Hello, The Question i need help with is: (we just did loops:for, do,while) so all answers need to be done containing these statements we learned. Not completely just be used.

We use separate class files from main for each assignment.

Write a program that reads a line of input as a string (through a menu that is reusable) and print:

a. Only the uppercase letters in the string.

b. every second letter of the string

c. the string, with all vowels replaced by an underscore.

d.the number of vowels in the string

e. the poitions of all vowels in the string

Thank you

3 Replies

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Vulpes13y ago
Accepted answer
It must be very confusing learning C# and Java at the same time - you have my sympathies.

Anyway try this:

import java.io.*;

class Program
{
public static void main(String[] args) throws IOException
{
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String text;

do
{
System.out.println("Enter a line of text or q to quit");

try
{
text = br.readLine();
}
catch(IOException e)
{
System.out.println("Something went wrong, program terminating.");
return;
}

if(text.toLowerCase().equals("q")) continue;

System.out.println("\nThe upper case letters (if any) are");
for(int i = 0; i < text.length(); i++)
{
char c = text.charAt(i);
if (c >= 65 && c <= 90) System.out.print(c);
}

System.out.println("\n\nEvery second character is");
for(int i = 1; i < text.length(); i += 2)
{
System.out.print(text.charAt(i));
}

System.out.println("\n\nThe string with vowels replaced by an underscore is");

int vowels = 0;

for(int i = 0; i < text.length(); i++)
{
char c = text.charAt(i);
if (c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u'
|| c == 'A' || c == 'E' || c == 'I' || c == 'O' || c == 'U')
{
System.out.print("_");
vowels++;
}
else
{
System.out.print(c);
}
}

System.out.println("\n\nThe number of vowels is");
System.out.println(vowels);

System.out.println("\nThe positions (from 0) of all vowels in the string is");

for(int i = 0; i < text.length(); i++)
{
char c = text.charAt(i);
if (c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u'
|| c == 'A' || c == 'E' || c == 'I' || c == 'O' || c == 'U')
{
System.out.printf("%d ", i);
}
}

System.out.println("\n\n");
}
while(!text.toLowerCase().equals("q"));
}
}
Vulpes13y ago
.NET development is a huge subject and no-one can hope to be an expert in all aspects of it nowadays.

To be successful, you therefore need to specialize in an area where there's a current (and hopefully continuing) demand for developers. So the question is what should you specialize in?

I don't think the programming scene has ever been more confusing than it is today but, if there's one thing that is clear, it's that programming for phones and tablets is becoming increasingly important and is likely to remain so for the foreseeable future.

So, if I was starting again from scratch, I think that's the area I'd want to be in.

One area I'd certainly avoid is desktop development (my own area) which I can see becoming increasingly moribund as far as new development is concerned though there'll be enough maintenance work to keep most of us busy for some years to come.

Of course, the jury's still out on whether Windows Phone and the Surface tablets will ever be able to achieve critical mass compared to iOS and Android devices. If you want to cover all the angles whilst continuing to program in C#, there's a lot to said for using Xamarin's tools rather than Microsoft's at the present time:

http://xamarin.com/
SUNIL GUTTA13y ago
Haa i am confused confused really :) Ty for your concern ..

Hey any suggestions regarding how to approach and build myself as a successful Dot net developer ..

Ty for ur support every-time