Java constructor chaining and avoid code repetition -

i have immutable class , want add new constructor without duplicating code in both constructors.

i have class:

public class test {     private final string stringparameter;      public test() {         stringparameter = "firstreallylongdefaultstring";     }      public test(string s) {         stringparameter = s;     } } 

and want add new constructor "char" parameter, this:

public test(char s) {     if(character.isletter(s)) {         stringparameter = "firstreallylong" + s + "defaultstring";     } else {         stringparameter = "firstreallylongdefaultstring";     } } 

how can without code repetition of long string? call "this()" constructor in else branch it's not possible.

you chain them more explicitly, removing code repetition:

public class test {     private static final string default_value = "firstreallylongdefaultstring";     private final string stringparameter;      public test() {         this(default_value);     }      public test(string s) {         stringparameter = s;     }      public test(char c) {         this(preparestring(c));     }      private static string preparestring(char c) {         if(character.isletter(s)) {             return "firstreallylong" + s + "defaultstring";         } else {             return default_value;         }     }  } 

the "firstreallylongdefaultstring" better done private constant avoid repetition.