To export a CSV file by applying Java Generics and reflection

There are requirements in the project to export data to a CSV file, because different classes have different properties, in order to code simple, the application of Java generics and reflection, wrote a function to complete the export function.

 Public<T>voidSaveFile (list<t>list, String outFile) throws IOException {if(List = =NULL||List.isEmpty ()) {            return; }        if(Stringutils.isempty (outFile)) {Throw NewIllegalArgumentException ("outfile is null"); } Boolean IsFirst=true; BufferedWriter out=NULL; Try {             out=NewBufferedWriter (NewFileWriter (outFile));  for(T t:list) {StringBuilder sb1=NewStringBuilder (); StringBuilder SB2=NewStringBuilder (); Class Clazz=(Class) T.getclass (); Field[] FS=Clazz.getdeclaredfields ();  for(inti =0; i < fs.length; i++) {Field F=Fs[i]; F.setaccessible (true); Try {                        if(IsFirst) {sb1.append (F.getname ()); Sb1.append (","); } Object Val= f.Get(t); if(val = =NULL) {sb2.append (""); } Else{sb2.append (val.tostring ()); } sb2.append (","); } Catch(IllegalArgumentException |illegalaccessexception e)                    {E.printstacktrace (); }                }                if(isFirst) { out. Write (Sb1.tostring ()); IsFirst=false;  out. NewLine (); }                 out. Write (Sb2.tostring ());  out. NewLine (); }        } Catch(IOException E1) {ThrowE1; } finally {            Try {                if( out!=NULL) {                     out. Close (); }            } Catch(IOException E2) {ThrowE2; }        }    }

To export a CSV file by applying Java Generics and reflection