To check if string contains particular word

Question

So how do you check if a string has a particular word in it?

So this is my code:

a.setOnClickListener(new View.OnClickListener() {          @Override         public void onClick(View arg0) {             // TODO Auto-generated method stub             if(d.contains("Hey")){                 c.setText("OUTPUT: SUCCESS!");              }else{                 c.setText("OUTPUT: FAIL!");               }         }     }); 

I'm getting an error.

Answer 1

Not as complicated as they say, check this you will not regret.

String sentence = "Check this answer and you can find the keyword with this code"; String search  = "keyword";  if ( sentence.toLowerCase().indexOf(search.toLowerCase()) != -1 ) {     System.out.println("I found the keyword");  } else {     System.out.println("not found");  } 

You can change the toLowerCase() if you want.

Answer 2

.contains() is perfectly valid and a good way to check.

(http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html#contains(java.lang.CharSequence))

Since you didn't post the error, I guess d is either null or you are getting the "Cannot refer to a non-final variable inside an inner class defined in a different method" error.

To make sure it's not null, first check for null in the if statement. If it's the other error, make sure d is declared as final or is a member variable of your class. Ditto for c.