How to convert a string array into a string in Java

If you convert a string array to a string, only through loops, there is no other way:

public static string getexecsqlstring (String str) {

StringBuffer sb = new StringBuffer ();

String prefixstr = str.substring (0,str.indexof (")");

String subStr = str.substring (Str.indesof ("(") +1,str.substring (")");

String vals[] = Substr.split ("(");

for (int i=0;i<vals.length;i++) {

if (i = = vals.length-1) {

Vals[i] = "?";

}else{

if (i = = 0) {

Vals[i] = "(?,";

}else{

Vals[i] = "?,";

}

}

Sb.append (Vals[i]);

}

return prefixstr+sb.tostring ();

}

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How to convert a string array into a string in Java