Java String Return Method Not Returning String? -


this question has answer here:

when compiling program, error "reformatname" method, "must return result of type java.lang.string" under assumption returns! each path method takes, returns string. (sorry if horribly formatted/written; it's first time posting here.)

import java.util.*; public class nameformatchallenge {     public static void main(string[] args) {     scanner wordinput = new scanner(system.in);     system.out.println("enter name");     string userinput = wordinput.nextline();     string[] name = userinput.split(" ");     system.out.println(reformatname(name)); }  public static string reformatname(string[] name) {     if(name[1].charat(1)=='.')       return formatone(name);     else if(name[1].length()==1)       return formattwo(name);     else if(name[0].charat(name[0].length()-1)!=',')       return formatthree(name);     else if(name[2].length()>2)       return formatfour(name);     else if(name[2].charat(name[2].length()-1)=='.')       return formatfive(name);     else if(name[2].length()==1)       return formatsix(name); }  public static string formatone(string[] name) {     name[1] = name[1].substring(0,1);     string tempzero = name[0];     string tempone = name[1];     string temptwo = name[2];     name[0] = temptwo;     name[1] = tempzero;     name[2] = tempone;     return nameconcatenation(name); }  public static string formattwo(string[] name) {     string tempzero = name[0];     string tempone = name[1];     string temptwo = name[2];     name[0] = temptwo;     name[1] = tempzero;     name[2] = tempone;     return nameconcatenation(name); }  public static string formatthree(string[] name) {     string tempzero = name[0];     string tempone = name[1];     string temptwo = name[2];     name[0] = temptwo;     name[1] = tempzero;     name[2] = tempone;     return nameconcatenation(name); }  public static string formatfour(string[] name) {     string tempone = name[1];     string temptwo = name[2];     name[1] = temptwo;     name[2] = tempone;     return nameconcatenation(name); }  public static string formatfive(string[] name) {     name[2] = name[2].substring(0,1);     string tempone = name[1];     string temptwo = name[2];     name[1] = temptwo;     name[2] = tempone;     return nameconcatenation(name); }  public static string formatsix(string[] name) {     string tempone = name[1];     string temptwo = name[2];     name[1] = temptwo;     name[2] = tempone;     return nameconcatenation(name); }  public static string nameconcatenation(string[] name) {     stringbuilder b = new stringbuilder();     int endofarrzero = name[0].length()-1;     int endofarrone = name[1].length();     int endofarrtwo = name[2].length()+1;     (int = 0; i<3; i++) {       b.append(string.valueof(name[i]));       if(i!=2) {         b.append(" ");       }     }     if(b.charat(endofarrzero) != ',') {       b.insert(endofarrzero,",");       endofarrone=endofarrone+1;       endofarrtwo=endofarrtwo+1;     }     if(b.charat(endofarrone) == '.') {       b.deletecharat(endofarrone);       endofarrtwo=endofarrtwo-1;     }     string finalname = b.tostring();     return finalname; }

the reformatname method not return string if none of conditionals evaluate true. execution of code fall through each of conditionals end of mehthod, has no return statement. adding return ""; honor signature of method should throw exception or return name.

public static string reformatname(string[] name) {   if(name[1].charat(1)=='.')       return formatone(name);   else     if(name[1].length()==1)       return formattwo(name);   else     if(name[0].charat(name[0].length()-1)!=',')       return formatthree(name);   else     if(name[2].length()>2)       return formatfour(name);   else     if(name[2].charat(name[2].length()-1)=='.')       return formatfive(name);   else     if(name[2].length()==1)       return formatsix(name);    return "";   /* fix i'm not sure      should return when no conditions evaluate true.*/ }

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