String
[] strings
= {"mac","qq","weChat","MSN"};
StringBuffer stringBuffer
= new StringBuffer();
for (int i
= 0;i
<strings
.length
;i
++){
stringBuffer
.append(strings
[i
]+",");
}
String newString
= stringBuffer
.toString();
System
.out
.println(newString
);
String newString2
= StringUtils
.join(strings
,",");
System
.out
.println(newString2
);
String newString3
= String
.format("%s,%s,%s,%s",strings
);
System
.out
.println(newString3
);
