Java中截取字符串中小数点前面的字符

1.通过下标获取
String number = "2563.2154";

int index = number.indexOf(".");

String intNumber = number.substring(0,index);

System.out.println("测试1："+intNumber); 

 

2.截取字符串的方式
String number = "2563.2154";

System.out.println("测试2："+number.split("\\.")[0]);