Java判断字符串是否为数字(浮点类型也包括)
public static void main(String[] args) { String numStr = "123121"; System.out.println(isNumeric(numStr)); System.out.println(isNumber(numStr...
public static void main(String[] args) { String numStr = "123121"; System.out.println(isNumeric(numStr)); System.out.println(isNumber(numStr...