Working on first Java project in Ecplise and need some help

Question

I am working on a Java project. I am working a programme to show sets of requirements to a software engineer. At the end the programme will show all consistent requirements with no conflicts between them.
I am working on the first section. This invloves creating a class with a HashSet to insert the requirements in to the class. I am using this code at the moment
import java.util.HashSet;
import java.util.Set;
public class requirements {
     public void HashSet() {
          Set<String> requirements = new HashSet<String>();
          //Declare some string items
          String item_1 = "r1";
          String item_2 = "r2";
          String item_3 = "r3";
          boolean result;
          //Add the items to the Set
          result = requirements.add(item_1);
          System.out.println(item_1 + ": " + result);
          result = requirements.add(item_2);
          System.out.println(item_2 + ": " + result);
          result = requirements.add(item_3);
          System.out.println(item_3 + ": " + result);
          //Now we try to add item_1 again
          result = requirements.add(item_1);
          System.out.println(item_1 + ": " + result);
          //Adding null
          result = requirements.add(null);
          System.out.println("null: " + result);
          //Adding null again
          result = requirements.add(null);
          System.out.println("null: " + result);
     public static void main(String[] args) {
          new requirements().HashSet();
the class is called requirements and I get these errors
Return type of the method is missing
Syntax error on token class, delete this token
Syntax error on token misplaced construct
Syntax error insert Enum body to complete EnumheaderName
Syntax Error insert Enum body to complete enum decleration
The public type requirements must be defined in its own file.
The next stage would be to send the Hashset to another class to perform operation on the set. The other class is called specification. Can anyone help me to resolve the errors and pass the set to the other class.
Thanks

Answer 1

muj wrote:
I am working on a Java project. I am working a programme to show sets of requirements to a software engineer. At the end the programme will show all consistent requirements with no conflicts between them.
I am working on the first section. This invloves creating a class with a HashSet to insert the requirements in to the class. I am using this code at the moment
import java.util.HashSet;
import java.util.Set;
public class requirements {
     public void HashSet() {
          Set<String> requirements = new HashSet<String>();
          //Declare some string items
          String item_1 = "r1";
          String item_2 = "r2";
          String item_3 = "r3";
          boolean result;
          //Add the items to the Set
          result = requirements.add(item_1);
          System.out.println(item_1 + ": " + result);
          result = requirements.add(item_2);
          System.out.println(item_2 + ": " + result);
          result = requirements.add(item_3);
          System.out.println(item_3 + ": " + result);
          //Now we try to add item_1 again
          result = requirements.add(item_1);
          System.out.println(item_1 + ": " + result);
          //Adding null
          result = requirements.add(null);
          System.out.println("null: " + result);
          //Adding null again
          result = requirements.add(null);
          System.out.println("null: " + result);
     public static void main(String[] args) {
          new requirements().HashSet();
the class is called requirements and I get these errors
Return type of the method is missing
Syntax error on token class, delete this token
Syntax error on token misplaced construct
Syntax error insert Enum body to complete EnumheaderName
Syntax Error insert Enum body to complete enum decleration
The public type requirements must be defined in its own file.
The next stage would be to send the Hashset to another class to perform operation on the set. The other class is called specification. Can anyone help me to resolve the errors and pass the set to the other class.
ThanksReading your code, it looks wrong... but it turns out that a lot of it was because you did not use CODE brackets like this:
{+code}
System.out.println("hello");
{code+}
becomes
   System.out.println("hello");It also seems that you code works as it is.
though I recommend putting classes inside a package.
Syntax error insert Enum body to complete EnumheaderNameWhere is this even in your code? Did you post the code you had a problem with?