Java issue string literal is not properly closed by a double-quote

String literal is not properly closed by a double-quote

This error: string strings do not end with double quotes
String Dburl = "jdbc:oracle:thin:@192.168.1.25:1521:ora10g";
There's a double quote at the back of this sentence.

Stmt.executeupdate ("INSERT into User" (Account,password,email,qq,phone,address,words) VALUES (' "+str1+" ', ' "+str2+" ', "+str4+" ', ' "+str5+" ', ' "+str6+" ', ' "+str7+" ', ' "+str8+" ') ";

Usually the punctuation is wrong, or the position is wrong, as long as careful examination will find the problem.

Java issue string literal is not properly closed by a double-quote