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java string multiplication
2 Answer(s)      5 years and 2 months ago
Posted in : Java Beginners

Is there any simple method of string multiplication in java ..?

February 13, 2012 at 3:25 PM

```public class StringMultiplication {
public static void main(String[] args) {
String number1 = "17";
String number2 = "15";

char[] n1 = number1.toCharArray();
char[] n2 = number2.toCharArray();

int result = 0;
for (int i = 0; i < n1.length; i++) {
for (int j = 0; j < n2.length; j++) {
result += (n1[i] - '0') * (n2[j] - '0')* (int) Math.pow(10, n1.length * 2 - (i + j + 2));
}
}
System.out.println(result);
}
}
```

February 13, 2012 at 3:25 PM

```import java.math.*;

public class StringMultiplication {
public static void main(String[] args) {
String number1 = "17";
String number2 = "15";

BigInteger num1=new BigInteger(number1);
BigInteger num2=new BigInteger(number2);
BigInteger result=num1.multiply(num2);
System.out.println(result);
}
}
```

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