Method using StringUtils.join () method

StringUtils.join () and String.Join () Purpose: The array or a mosaic character set to splice together to form a new string .

StringUtils.join () method:

Before (1) the need to use the introduction of common-lang3 jar package can be downloaded Quguan network: the Apache official download web page

(2) a method as shown below:

(3) passing substantially This method requires two parameters, the first parameter is passed an arbitrary set or array type, the second parameter is a mosaic character.

 List<String> list = new ArrayList<>();
        list.add("Mxy");
        list.add("StringUtils");
        list.add("join");
        The Join String = StringUtils.join (List, "-"); // passed in a String List collection, use the "-" sign splicing 
        System.out.println (join);
        
        String [] S = new new String [] { "Yuan", "Mxy"}; // passed an array of type String, a "-" sign splicing 
        String join2 StringUtils.join = (S, "-" );
        System.out.println(join2);

The results are as follows:

 
Mxy-StringUtils-join
 
Yuan -Mxy

Or so

 List<String> subnetIpList = new ArrayList<>();
        for (String item : subnetIpArray) {
            StringBuffer stringBuffer = new StringBuffer();
            stringBuffer.append("'");
            stringBuffer.append(item);
            stringBuffer.append("'");
            subnetIpList.add(stringBuffer.toString());
        }
        paramMap.put("subnetIpList", StringUtils.join(subnetIpList, ","));