JAVA - Object constructor does not accept parameters?

Question

I recently got into java, and I am currently running into a bit of a problem.

I have a simple class, that has 2 strings as members and 1 constructor method. Here is my class :

class ErrorMessage{
public void ErrorMessage(String type, String message){
    this.type = type;
    this.message = message;
}

private String type;
private String message;

}

As you can see my default constructor takes in 2 strings and sets the corresponding data members.

My problem occurs whenever I try to actually call that constructor. In my main function I have created a TreeMap out of a String and a TreeSet of my errorMessage class

TreeMap<String, TreeSet<ErrorMessage>> log = new TreeMap<>();

The problem is whenever I try to add new ErrorMessage objects to a given entry of my treemap, I get an error that my constructor does not accept 2 strings. (Check picture below)

It only lets me do it if I leave it empty like so:

log.get(projectName).add(new ErrorMessage());

Soo, I was wondering what I am doing wrong, so that my compiler does not recognize my constructor? Here is the full code : http://pastebin.com/i76EYmm1

Darek · Accepted Answer · 2016-05-08 07:47:13Z

4

This is not correct constructor:

public void ErrorMessage(String type, String message){
    this.type = type;
    this.message = message;
}

... for compiler this is just method that happens to have name same as class name!

From docs:

Constructor declarations look like method declarations—except that they use the name of the class and have no return type

Correct constructor should look like this:

public ErrorMessage(String type, String message){
    this.type = type;
    this.message = message;
}

Remember: No return type in constructors!

edited May 8, 2016 at 7:47

answered May 8, 2016 at 7:35

Darek

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Comments

mirmdasif · Accepted Answer · 2016-05-08 07:44:27Z

3

Defined your constructor as follows

public ErrorMessage(String type, String message) {
  // Codes
}

edited May 8, 2016 at 7:44

answered May 8, 2016 at 7:34

mirmdasif

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Comments

Jitendra Tiwari · Accepted Answer · 2017-07-05 02:48:20Z

1

In java a constructor has no return type not even void. Remove void for it to be a proper java constructor.

public ErrorMessage(String type, String message){
    this.type = type;
    this.message = message;
}

edited Jul 5, 2017 at 2:48

answered May 8, 2016 at 7:37

Jitendra Tiwari

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