Java – when to create an Enum instance?

I have a simple question about enumeration in Java. Please refer to the following code When to instantiate propname Contents and other examples?

public enum PropName {

  CONTENTS("contents"),USE_QUOTES("useQuotes"),ONKEYDOWN("onkeydown"),BROWSER_ENTIRE_TABLE("browseEntireTable"),COLUMN_headingS("columnheadings"),PAGE_SIZE("pageSize"),POPUP_TITLE("popupTitle"),FILTER_COL("filterCol"),sql_SELECT("sqlSelect"),;

  private String name;

  private PropName(String name) {
    this.name = name;
  }

  public String getName() {
    return name;
  }
}

Solution

It is created when the class is loaded, just like any static code block