Java-将最后一个字符存储在数组中

Question

Is it possible to store the last characters from a string in an array as a double?

I have following string:

String s="random number 230";

That means I would like to have the array to look like this:

double array[] = {230}

Answer 1

I'm not sure what you are looking for, but based entirely on the example you gave, you could use this:

String[] words = s.split(" ");
String numberString = words[words.length-1];

try{
    double[] array = new double[]{Double.parseDouble(numberString)};
}
catch(NumberFormatException e){

    e.printStackTrace();
}

Explanation:

.split turns a string into an array of strings based on some delimiter.

I used a blank space (ie " " ).

Then, I reference the last string in the array as numberString . The array size will only be 0 if s is an empty string (which would be a different problem).

And then I use Double.parseDouble() which tries to return a double value represented in a string. The try\\catch block means that we are prepared that it might not work.

More information on that last bit can be found here