Thread: [SOLVED] Integer values from a mixed textfile in Java using Scanner

Hello, I am not sure how to read Integer values from a textfile that has "strings" and "ints" . I want to save strings in an array and int in an array so I can use them later on.
For example, ask for something and output this element.

static void readArray(String fileName) throws FileNotFoundException {
 
Scanner s = new Scanner(new File(fileName));
ArrayList<String> Array = new ArrayList<String>(); 
ArrayList<Integer> ArrayInt = new ArrayList<Integer>();
 
// Here my try..
 
//int j = 0;
			while(s.hasNextInt())
			{
				ArrayInt.add(s.nextInt()); 
			}
 
			Out.println(ArrayInt);
 
}

My Output is: [] but there should be int values in it

how to read Integer values from a textfile that has "strings" and "ints"

The Scanner class has methods that will tell you what data type the next token to be read is. Look at the hasNext... methods.
If you only want to read integer values, use the hasNextInt method to test if the next token can be converted to an int value.
If it can't, use next() to read it and ignore what was read.

My Output is: [] but there should be int values in it

The code you posted will never call the nextInt() method if the first token is not an integer.

The call to hasNext() does NOT read anything. Use next() to read the non-integer.
For debugging add a print statement that prints out the values that were skipped.

if(s.hasNextInt())
		{
			Out.println("Int: " + s.nextInt());    //  Reads the int found by hasNextInt
			ArrayInt.add(s.nextInt());   // This reads the next value.  What is it??

The hasNextInt only checks the next token. That token could be followed by anything.
Read the value into a variable, then print it and add it to the list.