Question

im getting this

Error: Main method not found in class Tuple, please define the main method as:
public static void main(String[] args)
or a JavaFX application class must extend javafx.application.Application

please modify the code

import java.io.InvalidClassException;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;

public class Tuple {

private List<Object> fields; // stores the fields(s) of the tuple in the original sequence

public Tuple(List<Object> fields) throws InvalidClassException {
this.fields = fields;
}

// gets the fields of this tuple
public List<Object> getFields() {
return fields;
}

@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Tuple tuple = (Tuple) o;
return Objects.equals(fields, tuple.fields);
}

@Override
public int hashCode() {
return Objects.hash(fields);
}

@Override
public String toString() {
return "Tuple{" +
"fields=" + fields +
'}';
}
}

Answer 1

import java.io.InvalidClassException;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
class Tuple {

private List<Object> fields; // stores the fields(s) of the tuple in the original sequence

public Tuple(List<Object> fields) throws InvalidClassException {
this.fields = fields;
}

// gets the fields of this tuple
public List<Object> getFields() {
return fields;
}

@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Tuple tuple = (Tuple) o;
return Objects.equals(fields, tuple.fields);
}

@Override
public int hashCode() {
return Objects.hash(fields);
}

@Override
public String toString() {
return "Tuple{" +
"fields=" + fields +
'}';
}

   public static void main(String[] args) {
       System.out.println("Hello World");
   }
}

Note: Main method is the entry point of the code.

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