Android Copy String Like Delphi Copy's Function

Question

Example 1:
i Have an Apple
Example 2:
I Love U

i would like to copy 10 string only, start index from first character. Delphi code would be like this :
copy('I Have an Apple',0,10)
copy('I Love U',0,10)

Result become
i Have an
I Love U

Any same function in Android? no method how long the string, i just want the first 10 character

score 1 · Answer 1 · edited May 23 '17 at 11:57

1

You're probably after .substring(int start,int end) which applied to your code, would be something like the code below, however when you say you would like to copy "10 string only" you should say 10 characters from said string:

String apple     = "i Have an Apple";
String appleCopy = apple.substring(0,10); // "i Have an "

If you want to handle the IndexOutOfBoundsException inline, you could do this, as suggested here, which would take the first n characters if the length is sufficient, or the whole string if its shorter.

String appleCopy = apple.substring(0, Math.min(apple.length(), 10));

edited May 23 '17 at 11:57

Community

1
1

answered Feb 23 '14 at 20:24

Juan Cortés

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if string shorter than 10 chac, will be error with out of index or not? – John Walker Feb 23 '14 at 20:44
It will throw an IndexOutOfBoundsException if start < 0 or start > length(). It's up to you to handle it. See my edit for a simple way of handling it. – Juan Cortés Feb 23 '14 at 20:48

Android Copy String Like Delphi Copy's Function

1 Answers1