How to remove the last extra comma when java splicing strings

This article describes the method of removing the last redundant comma when java splicing strings. Share it for your reference. The specific analysis is as follows:

Let's look at the following code first:

 for (int t = 0; t < memberLen; t++) { memTemp = stafferMap.get(strMember[t]); if(memTemp != null){ memberNames += memTemp + ","; }}

In the above code, the string spliced ​​will have an extra "," such as: "str1,str2,str3,". To remove the comma after str3, you can use the following methods:

 memberNames = memberNames.substring(0, memberNames.length()-1);

For example, when Team1=test ', 'U1-Team ', 'V-Team ', '

How to change to:

Team1= 'test ', 'U1-Team ', 'V-Team '

Available:

 Team1 = " ' " + Team1.Substring(0, Team1.Length - 2);

The following are the additions from other netizens:

If you splice, you can use the following code

 StringBuilder sdb = new StringBuilder();for ( int t = 0; t < memberLen; t++ ){memTemp = stafferMap.get( strMember[t] );if ( memTemp != null ){if ( sbd.length > 0 ) {sbd.append( "," ).append( memTemp );}else{sbd.append( memTemp );}}}System.out.pretln( "No extra comma:" + sbd.toString() );

I hope this article will be helpful to everyone's Java programming.