I'm creating a game of hangman, and long story short, is there a shortcut of sorts to put this array of separate strings together into a string other than doing like below?
String after = under[0] + under[1] + under[2] + under[3] + under[4] + under[5] + under[6] + under[7] + under[8] + under[9] + under[10] + under[11] + under[12] + under[13] + under[14] + under[15] + under[16] + under[17] + under[18] + under[19] + under[20] + under[21];
You can do it with a loop, like this:
StringBuilder sb = new StringBuilder();
for (int i = 0 ; i != 22 ; i++) {
sb.append(under[i]);
}
String after = sb.toString();
You can also add strings to an initially empty string, but that's suboptimal, because all the intermediate strings get allocated and released in a loop.
Always use loop to perform repetitive operation like this.
Also, It is advised to use StringBuilder instead of String. String in JAVA is immutable.
StringBuilder sb = new StringBuilder();
int nCount = 22;
for (int iCnt = 0 ; iCnt <= nCount ; iCnt++) {
sb.append(under[iCnt]);
}
String after = sb.toString();
try it:
String after = "";
for (int i=0; i<22; i++)
after += under[i];
This code is not shorter, but is less tedious:
StringBuilder afterBldr = new StringBuilder();
for (String underEl : under) {
afterBldr.append(underEl);
}
String after = afterBldr.toString();
Apache Joiner can be used here.
Joiner.on("").join(names)
If you have access to the Apache Commons library, use the join() method, it's the nicest solution:
String str = StringUtils.join(under, "");
String after = StringUtils.join(under, '');.