Welcome to the Treehouse Community
Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.
Start your free trial
Venu Babu Kolasani
Courses Plus Student 628 PointsUsing indexOf(String) throwing an error
What is the error in the attached code?
I am returning the result of an expression, however I am getting the error message.
public class ScrabblePlayer {
// A String representing all of the tiles that this player has
private String tiles;
public ScrabblePlayer() {
tiles = "";
}
public String getTiles() {
return tiles;
}
public void addTile(char tile) {
// TODO: Add the tile to tiles
tiles+=tile;
}
public boolean hasTile(char tile) {
// TODO: Determine if user has the tile passed in
boolean isTile = tiles.indexOf(tile)!=0;
if(isTile){
tiles+=tile;
}
return isTile;
}
}
1 Answer
andren
28,558 PointsThe hasTiles method is only meant to check if a tile is present, it should not add anything to the tiles string like you do in your code. Also if indexOf returns 0 then the value is present in tiles (at index 0), -1 is the value returned if the value is not present. So the 0 in your code should be changed to -1.
Like this:
public boolean hasTile(char tile) {
// TODO: Determine if user has the tile passed in
boolean isTile = tiles.indexOf(tile) != -1;
return isTile;
}
You can also just return the expression directly without assigning it to a variable first:
public boolean hasTile(char tile) {
// TODO: Determine if user has the tile passed in
return tiles.indexOf(tile) != -1;
}
Which is a bit more concise.