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Java String Exercises: Get the character at the given index within the String

Java String: Exercise-1 with Solution

Write a Java program to get the character at the given index within the String.

Pictorial Presentation:

Java String Exercises: Get the character at the given index within the String

Sample Solution:

Java Code:

public class Exercise1 {
   public static void main(String[] args)
    {
        String str = "Java Exercises!";
        System.out.println("Original String = " + str);
        // Get the character at positions 0 and 10.
        int index1 = str.charAt(0);
        int index2 = str.charAt(10);

        // Print out the results.
        System.out.println("The character at position 0 is " +
            (char)index1);
        System.out.println("The character at position 10 is " +
            (char)index2);
    }
}

Sample Output:

Original String = Java Exercises!                                                                             
The character at position 0 is J                                                                              
The character at position 10 is i 

Flowchart:

Flowchart: Java String  Exercises - Get the character at the given index within the String

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Java Code Editor:

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Java: Tips of the Day

Directory Content:

Java allows you to get the names of all subdirectories and files in a folder as an array, which can then be sequentially viewed.

import java.io.*;
  
public class ListContents {
  public static void main(String[] args) {
    File file = new File("//home//user//Documents/");
    String[] files = file.list();
  
    System.out.println("Listing contents of " + file.getPath());
    for(int i=0 ; i < files.length ; i++)
    {
      System.out.println(files[i]);
    }
  }
}