正则表达式提取 替换

//提取
public void regExp(){
		String hqlString = "select * from User where username = xuly and password = 1111";
		Pattern pattern = Pattern.compile("(username\\s=\\s\\S*)");
		Matcher matcher = pattern.matcher(hqlString);
		while (matcher.find()) {
			System.out.println(matcher.group(1));
		}
	}
	
//替换
	@Test 
	public void replace(){
		String hqlString = "select * from User where username = ? and password = ?";
		Pattern pattern = Pattern.compile("\\?");
		Matcher matcher = pattern.matcher(hqlString);
		System.out.println(matcher.replaceAll("values"));
	}