java数据输入与分辨问题

import java.util.ArrayList;

import java.util.Scanner;

public class DataParse {

public DataParse() {

Scanner scanner = new Scanner(System.in);

String str = scanner.nextLine();

ArrayList<Integer> intArr = new ArrayList<Integer>();

ArrayList<Double> dblArr = new ArrayList<Double>();

ArrayList<String> strArr = new ArrayList<String>();

while(!str.isEmpty()) {

try {

Integer e = Integer.parseInt(str);

intArr.add(e);

}catch(NumberFormatException e) {

try {

Double d = Double.parseDouble(str);

dblArr.add(d);

}catch(NumberFormatException ex) {

strArr.add(str);

}

str = scanner.nextLine();

}

System.out.println("整数***计有" + intArr.size() + "个");

for(Integer e: intArr)System.out.println(e);

System.out.println("小数***计有" + dblArr.size() + "个");

for(Double e: dblArr)System.out.println(e);

System.out.println("字符串***计有" + strArr.size() + "个");

for(String e: strArr)System.out.println(e);

}

/**

* @param args

public static void main(String[] args) {

// TODO Auto-generated method stub

new DataParse();

}

// 输入两个回车结束输入

1222

222

44.66

55.7

整数***计有2个

1222

222

小数***计有2个

44.66

55.7

字符串***计有2个