java中的字符婚配
java中的字符匹配
//字符表达式
String str1 = "-42223330.31";
String str2 = "237,97996.31";
//过滤字符便于后续处理
str1 = str1.replaceAll(",", "");
str2 = str2.replaceAll(",", "");
//定义模式表达式
Pattern pattern = Pattern.compile("-?(0|([1-9]\\d*))\\.?\\d*");
//构建模式匹配对象
Matcher isNum1 = pattern.matcher(str1);
Matcher isNum2 = pattern.matcher(str2);
//执行模式匹配方法
System.out.println(isNum1.matches());
System.out.println(isNum2.matches());