Subtracting Strings

[ravian]

Hi,

I want to subtract a String from another. I tried the following which didn't work.
Please advice solution.

Code:

		String s1 = "I am from UK.";
		String s2 = "I am from";
		
		System.out.println(s1 - s2);

Thanks.

[gibsonrocker800]

you could use the substring method of the String class.

Code:

String s1 = "I am from UK.";
String s2 = s1.substring(0, 9);

System.out.println(s2);

As i learned from CaptainMorgan, the first argument of the substring method operates on a 0 based index, meaning that the index first character of the string is 0. and then, for the second argument (9) operates on a 1 based index, meaning that the index of the first character is 1.

[rpwtdj]

String s1 = "I am from UK.";
String s2 = "I am from";
System.out.println(s1.substring(0,s2.length()));

[ravian]

Thanks all of you.
But it wont work if am not sure about the indexes.

Code:

String s1 = "I am from UK.";
String s2 = "I am from";
System.out.println(s1 - s2); // output should be -- UK

String s3 = "I am from UK.";
String s4 = "UK";
System.out.println(s3 - s4); // output should be -- I am from

I want some generic way of doing it if possible.
Thanks for your time.

[roots]

Regex replace .. Replace (-2nd param with empty string) ..

[ravian]

Thanks everyone. Following worked for me.

Code:

String s1 = "I am from UK.";
String s2 = "I am from";
System.out.println(s1.replaceAll(s2," "));