How to add constant to enum?-CodePudding

I have a enum with some links. In those links is the same version number (1.1.1), for now as a String, which I would like to replace with constant. How to do this? I could edit link while returning it (replace some string with my constant), but it does not seems like clean solution. Thank you for any help!

package test.intro;

import test.version;

public enum LinkType
{
  LINK1("test/1.1.1/doc/test1.pdf"),
  LINK2("test/1.1.1/doc/test2.pdf"),
  LINK3("test/1.1.1/doc/test3.pdf");
  
  public final String href;
  //my constant I want to use:
  private final String versionName = version.getVersionName();

  private LinkType(String href)
  {
    this.href = href;
  }

  public String getHref()
  {
    return href;
  }

}

CodePudding user response：

You could do something like this:

package test.intro;

import test.version;

public enum LinkType {

  LINK1("test/%s/doc/test1.pdf"),
  LINK2("test/%s/doc/test2.pdf"),
  LINK3("test/%s/doc/test3.pdf");

  public final String hrefTemplate;

  private LinkType(String hrefTemplate) {
    this.hrefTemplate = hrefTemplate;
  }

  public String getHrefTemplate() {
      return this.hrefTemplate;
  }

  public String getHref() {
    return String.format(this.hrefTemplate, version.getVersionName());
    // or return this.hrefTemplate.formatted(version.getVersionName()); if you have Java >= 13

  }

}

CodePudding user response：

I guess version.getVersionName() is a static method?

Then you could just write LINK1("test/" version.getVersionName() "/doc/test1.pdf") etc.