Compare part of a string

Hi folks

I need to find a way to compare part of a string to another (ignoring case inlcuded), but can´t find to code for that. Hopefully someone can give a hand.

So if i have a string, that says "Boy, I could sure use lots of cocaine right now", and I want to a positive match if comparing it to a string which is "Cocaine", how should my comparison look?

(sry for the example, it was the first that came to mind :)

Have you read through the API for java.lang.String?

db

Yep, unfortunately i dont understand it, being so new to java :)

Im on a "dicphering other code" state, to figure out what to do. So i was hoping to get a bit of code I could play with, that would help a lot.

For this you can use the method .contains() from the string class. What it does is takes a sequence of chars and compares them to a string. If that string has the char sequence it returns true.
String (Java 2 Platform SE 5.0)

To make it case insensitive you should look into a method that allows you to control to case of the Strings.

I'll help you along, but you have to write your own code. To ignore case, you would convert both Strings to either upper or lower case -- String has methods for that. And which method in the API do you think might help you find whether one String contains another String?

db

Quote:

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Originally Posted by jhuber151

For this you can use the method .contains() from the string class. What it does is takes a sequence of chars and compares them to a string. If that string has the char sequence it returns true.
String (Java 2 Platform SE 5.0)

To make it case insensitive you just add on a toLowerCase() to both strings, so it would look similar to

Code:

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String checkIn = "The cat ran in the house";
String compareTo = "cat";
boolean contains = checkIn.toLowerCase().contains(compareTo.toLowerCase());
System.out.println(contains);

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jhuber151, please don't spoonfeed. Give people a chance to learn.

db

"contains = checkIn.toLowerCase"

Brilliant. I had found a way, but this is way more clean and simple. Thx a lot.

you can also use

Code:

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message.indexOf("word")

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Just another possibility you might consider.

Quote:

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Originally Posted by bob 6

you can also use

Code:

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message.indexOf("word")

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Just another possibility you might consider.

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No, you can't. Read the question in the first post, carefully.

db