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Java String Exercises: Read a string,if the string begins with "red" or "black" return that color string, otherwise return the empty string

Java String: Exercise-59 with Solution

Write a Java program to read a string,if the string begins with "red" or "black" return that color string, otherwise return the empty string.

Sample Solution:

Java Code:

import java.util.*;
public class Main
{
public String pickColor(String str) 
{
  if (str.startsWith("red"))
    return "red";
  if (str.startsWith("black"))
    return "black";
  else
    return "";
}
public static void main (String[] args)
    {
      Main m= new Main();
      String str1 =  "blacksea";
      System.out.println("The given strings is: "+str1);
      System.out.println("The string begins with the color: "+m.pickColor(str1));
	  }
}

Sample Output:

The given strings is: blacksea
The string begins with the color: black

Pictorial Presentation:

Java String Exercises: Read a string,if the string begins with "red" or "black" return that color string, otherwise return the empty string

Flowchart:

Flowchart: Java String Exercises - Read a string,if the string begins with "red" or "black" return that color string, otherwise return the empty string

Visualize Java code execution (Python Tutor):


Java Code Editor:

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Next: 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.

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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