How to recognize textfiled data type java string or integer

Question

我有文本框，我想知道用户在文本框中输入的数据类型，并且取决于类型，如果有任何功能可以知道数据类型，我想做点什么。

Answer 1

import org.apache.commons.lang.StringUtils;    
StringUtils.isNumeric(String s);

Notice this doesn't throw exceptions on regular cases, which should be avoided in every possible scenario.

Answer 2

String name= scanner.nextLine();
try{
   int integerValue = Integer.parseInt(name);
   sysout("Name is integer value")
}
catch(NumberFormatException){
  sysout("name is not an integer value");
}

Answer 3

By default you will get string type only, you have to write your own logic for checking datatype. you can restrict input for numberic or string values only using javascript.