How to implement a 'generate getter/setter' for a Java Class in emacs?

Question

Sometimes I miss the laziness of using an IDE that let me just write the attribute of a Java class and then let the IDE generate the required getter/setter.

Can Emacs do

Answer 1

I'm using yasnippet as well, but this is a better snippet, imho:

# -*- mode: snippet -*-
# name: property
# key: r
# --
private ${1:T} ${2:value};
public $1 get${2:$(capitalize text)}() { return $2; }
public void set${2:$(capitalize text)}($1 $2) { this.$2 = $2; }
 $0

This code, for instance is generated in 10 keystrokes (r, C-o, Long, C-o, id, C-o):

private Long id;
public Long getId() { return id; }
public void setId(Long id) { this.id = id; }

I recommend binding yas/expand to C-o and not TAB to avoid clashes with e.g. auto-complete. I have this setup:

(global-set-key "\C-o" 'open-line-or-yas)
(defun open-line-or-yas ()
  (interactive)
  (cond ((and (looking-back " ") (looking-at "[\s\n}]+"))
     (insert "\n\n")
     (indent-according-to-mode)
     (previous-line)
     (indent-according-to-mode))
    ((expand-abbrev))
    (t 
     (setq *yas-invokation-point* (point))
     (yas/next-field-or-maybe-expand-1))))
(defun yas/next-field-or-maybe-expand-1 ()
  (interactive)
  (let ((yas/fallback-behavior 'return-nil))
    (unless (yas/expand)
      (yas/next-field))))

Note (expand-abbrev) somewhere inside this code. It allows me to expand e.g. bis to BufferedInputStream when I define:

(define-abbrev-table 'java-mode-abbrev-table
  '(
    ("bb" "ByteBuffer" nil 1)
    ("bis" "BufferedInputStream" nil 1)
    %...
))