／／判斷整數(shù)（int）private boolean isInteger(String str) {	if (null == str || "".equals(str)) {		return false;	}	Pattern pattern = Pattern.compile("^[-//+]?[//d]*$");	return pattern.matcher(str).matches();} ／／判斷浮點(diǎn)數(shù)（double和float）private boolean isDouble(String str) {	if (null == str || "".equals(str)) {		return false;	}	Pattern pattern = Pattern.compile("^[-//+]?[.//d]*$");	return pattern.matcher(str).matches();}