Refactor String concatenation to StringBuilder with intelliJ

问题

I was designated to make refactoring on a project, and I came across this situation

 this.path = DESTINY + deploy.name() + FILE_SEPARATOR + delivery.getSystem().getCode()
      + FILE_SEPARATOR + delivery.getName() + FILE_SEPARATOR + delivery.getEnviroment().getName();

I want to refactor it to something like this:

StringBuilder tmpPath = new StringBuilder();
tmpPath.append(DESTINY);
tmpPath.append(deploy.name());
tmpPath.append(FILE_SEPARATOR);
tmpPath.append(delivery.getSystem().getCode());
tmpPath.append(FILE_SEPARATOR);
tmpPath.append(delivery.getName());
tmpPath.append(FILE_SEPARATOR);
tmpPath.append(delivery.getEnviroment().getName());
this.path = tmpPath.toString();

Or

StringBuilder path = new StringBuilder();

...

this.path.append(DESTINY);
this.path.append(deploy.name());
this.path.append(FILE_SEPARATOR);
this.path.append(delivery.getSystem().getCode());
this.path.append(FILE_SEPARATOR);
this.path.append(delivery.getName());
this.path.append(FILE_SEPARATOR);
this.path.append(delivery.getEnviroment().getName());

Whats is the fastest way to do that ?

回答1:

Just hit Alt + Enter when having cursor on your original code:

Then you can choose the variant you prefer the most such as replacing it with String Builder. IDEA will do all the work for you.

来源：https://stackoverflow.com/questions/48543138/refactor-string-concatenation-to-stringbuilder-with-intellij