When using Eclipse, for example, if you type syso, you get:

System.out.println("");

We can do it in vim, just to set the vimrc file like following:

abbr psvm public static void main(String[] args){<CR>}<esc>O
abbr syso System.out.println("");<esc>2hi
abbr sop System.out.println("");<esc>2hi
abbr syserr System.err.println("");<esc>2hi
abbr sep System.err.println("");<esc>2hi
abbr forl for (int i = 0; i < ; i++) {<esc>7hi
abbr tryb try {<CR>} catch (Exception ex) {<CR> ex.printStackTrace();<CR>}<esc>hx3ko
abbr const public static final int

abbr ctm System.currentTimeMillis()
abbr slept try {<CR> Thread.sleep();<CR>}<esc>hxA catch(Exception ex) {<CR> ex.printStackTrace();<CR>}<esc>hx3k$hi