Can someone help me to create a small program in which I can create star designs

Question

Can someone help me to create a small program in which I can create star designs according to the user input. This have to be done with loops because it has to show that if the user first hits A , and then he inputs 3 for the number of rows then the design is:

*
**
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if the design inputs B and then, lets say 4 for the number of rows the design will be:
****
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**
*

If the user inputs c and then, any number (lets say 5) for the numbers of rows the output is.

*
**
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****
*****

Finally in the case that the user inputs d and then lets say 4 the output is:

****
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**
*

If the user inputs x then the program will end the loop

Explanation / Answer

import java.io.*; public class StarDesign { public static void main(String args[]) throws Exception { BufferedReader br=new BufferedReader(new InputStreamReader(System.in)); String s; char ch=' '; do { System.out.print("enter ur choice: "); s=br.readLine(); s=s.toLowerCase(); ch=s.charAt(0); switch(ch) { case 'a': for(int i=1;i

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