Java中截取字符串中小數點前面的字符

• 通過下標獲取

String number = "2563.2154";

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

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

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

 

• 截取字符串的方式

String number = "2563.2154";

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