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Java String Exercises: New string taking specified number of characters from first and last position of a given string

Java String: Exercise-61 with Solution

Write a Java program to create a new string taking specified number of characters from first and last position of a given string.

Sample Solution:

Java Code:

import java.util.*;
public class Main
{
public String nTwice(String str, int n) 
{
  return str.substring(0,n) + str.substring(str.length()- n, str.length());
}
public static void main (String[] args)
    {
      Main m= new Main();
      String str1 =  "Welcome";
	  int n1 =  3;
	  
      System.out.println("The given strings is: "+str1);
	  System.out.println("The given numbers is: "+n1);
      System.out.println("The new string is: "+m.nTwice(str1,n1));
	  }
}

Sample Output:

The given strings is: Welcome
The given numbers is: 3
The new string is: Welome

Pictorial Presentation:

Java String Exercises: New string taking specified number of characters from first and last position of a given string

Flowchart:

Flowchart: Java String Exercises - New string taking specified number of characters from first and last position of a given string

Java Code Editor:

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Previous: Write a Java program to read two strings append them together and return the result. If the strings are different lengths, remove characters from the beginning of longer string and make them equal length.
Next: Write a Java program to read a string and return true if "good" appears starting at index 0 or 1 in the given string.

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Java: Tips of the Day

Count the number of occurrences of a char in a String:

int count = StringUtils.countMatches("a.b.c.d", ".");

Ref: https://bit.ly/2OTy6sG