Read elements from a file and store them in ArrayList as Objects
I have a file contains (string, int, floating, char)
12
1.8
a
John
23.5
I want to read them an store them in an ArrayList. My ArrayList type is object. But, still I get exceptions when I run it.
public static void main(String [] args) throws IOException{
try{
FileReader a=new FileReader("src/SET_A.txt");
Scanner b=new Scanner(a);
ArrayList<Object> c=new ArrayList<Object>();
while(b.hasNextLine())
{
Object d=b.nextInt();
c.ad开发者_如何学运维d(d);
}
System.out.println("The content of arraylist is: " + a);
}
catch(Exception exception)
{
exception.printStackTrace();
}
}
Are you displaying the File or the Contents of ArrayList? You should be displaying C and not A. If not, please let us know what is the Exception.
精彩评论