Separate number, characters and special characters
And get the sum of the numbers.
package test;
import java.util.Arrays;
public class SeparateCharAndInteger {
public static void main(String[] args) { // we use regular expression
String str = "asd?&&*$#^&)123As?@jsH76>10]aa##)*";
String numberOnly = str.replaceAll("[^0-9]", "");
String stringOnly = str.replaceAll("[^a-zA-Z]", "");
String specialCharOnly = str.replaceAll("[a-zA-Z0-9]", ""); // there is no cap here ^^^^
System.out.println("number only: " + numberOnly);// Output: 1237610
System.out.println("string only: " + stringOnly);// Output: asdAsjsHaa
System.out.println("special Character Only only: " + specialCharOnly);// Output: ?&&*$#^&)?@>]##)*
// ------------------Get the sum of the numbers-------------------
String numberArray = str.replaceAll("[^0-9]", " ");// numbers with space
System.out.println("special Character Only only: " + numberArray);// Output: 123 76 10
String ar = numberArray.trim();
System.out.println("ar: " + ar);// Output After TRIM:123 76 10
String[] strNumArr = ar.split(" ");// Creating Array
System.out.println(Arrays.toString(strNumArr));// Output: [123, , , , , , , 76, 10]
int sum = 0;
for (int i = 0; i < strNumArr.length; i++) {
if (!(strNumArr[i].equals(""))) {// this is not space(" ") but without space("")--this is important
System.out.println("strNumArr[i]: " + strNumArr[i]);// Output123, 76, 10
sum = sum + Integer.parseInt(strNumArr[i]);
}
}
System.out.println("The sum: " + sum);// Output: 209
}
}