Question

I'm working with Java and I have a error message  1 error
Error: Could not find or load main class Flowers. This is the problem:

Instructions

1. Make sure the source code file named Flowers.java is open.
2. Declare the variables you will need.
3. Write the Java statements that will open the input file, flowers.dat, for reading.
4. Write a while loop to read the input until EOF is reached.
5. In the body of the loop, print the name of each flower and where it can be grown (sun or shade) using a format of flowerName + " is grown in the " + sunOrShade).
6. Execute the program

This is what I have so far:

import java.io.*; // Import class for file input.

public class Flowers
{
public static void main(String args[]) throws Exception
{
// Declare variables here
String flowerName;
String sunOrShade;
  
// Open input file.
FileReader fr = new FileReader("Flowers.dat");
  
// Create BufferedReader object.
BufferedReader br = new BufferedReader (fr);

// Write while loop that reads records from file.
while ((flowerName=br.readLine()) !=null)

// Print flower name and the words sun or shade.
System.out.println("Flowers: " + flowerName + "\nGrown in: " + sunOrShade);

br.close();
System.exit(0);
} // End of main() method.

} // End of Flowers class.

Answer 1

'Could not find or load main class Flowers' error occurs when there is no Compiled class Flowers.class is present in the Classpath.

First, we need to compile the class using the command

javac Flowers.java

Once succesfully compiled, we can see Flowers.class file in the same folder.

Then we need to run the program using the command

java Flowers

It should produce the expected output.

CODE :

import java.io.*; // Import class for file input.

public class Flowers
{
public static void main(String args[]) throws Exception
{
// Declare variables here
String flowerName;
String sunOrShade;

// Open input file.
FileReader fr = new FileReader("Flowers.dat");

// Create BufferedReader object.
BufferedReader br = new BufferedReader (fr);

// Write while loop that reads records from file.
String input;
while ((input=br.readLine()) !=null) {

// Print flower name and the words sun or shade.
String words[] = input.split(" ");
flowerName = words[0];
sunOrShade = words[1];
System.out.println("Flowers: " + flowerName + "\nGrown in: " + sunOrShade);
}
br.close();
System.exit(0);
} // End of main() method.

} // End of Flowers class.

OUTPUT :