<br>タグを改行文字に置き換える

String html = "<html><script>if(a<0){...}</script><body><p>abc<br>def</p>text1<br>text2<BR>text3</body></html>";


Pattern pattern1 = Pattern.compile("<(br|BR)>", Pattern.DOTALL);


Matcher matcher1 = pattern1.matcher(html);

String s = matcher1.replaceAll("\r\n");


System.out.println(s);