java - How to empty file content and then append text multiple times -

i have file (file.txt), , need empty current content, , append text multiple times.

example: file.txt current content is:

aaa

bbb

ccc

i want remove content, , append first time:

ddd

the second time:

eee

and on...

i tried this:

// empty current content fileout = new filewriter("file.txt"); fileout.write(""); fileout.close();  // append fileout = new filewriter("file.txt", true);  // when want write multiple times: fileout.write("text"); fileout.flush(); 

this works fine, seems inefficient because open file 2 times remove current content.

when open file write new text, overwrite whatever in file already.

a way is

// empty current content fileout = new filewriter("file.txt"); fileout.write(""); fileout.append("all text"); fileout.close();