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Added spaced String generation method

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Ziver Koc 2015-05-20 15:27:04 +00:00
parent b90d1ec5cf
commit b6fd646b5c
1 changed files with 22 additions and 0 deletions
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22
src/zutil/StringUtil.java
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@ -24,6 +24,8 @@ package zutil;
import zutil.converters.Converter;
import java.util.ArrayList;
/**
* This is a class whit utility methods.
*
@ -207,4 +209,24 @@ public class StringUtil {
return output.toString();
}
private static ArrayList<String> SPACES = new ArrayList<String>();
/**
* @return A string containing a specific amount of spaces
*/
public static String getSpaces(int i){
if(SPACES.size() <= i){ // Generate the String with spaces
synchronized (SPACES) { // Make sure no one else updates the list at the same time
if(SPACES.size() <= i) { // Make sure the previous synchronized thread hasn't already generated strings
if (SPACES.isEmpty())
SPACES.add("");
for (int j = SPACES.size(); j <= i; j++) {
SPACES.add(SPACES.get(j - 1) + " ");
}
}
}
}
return SPACES.get(i);
}
}