Remove the last comma when Java generates a string

Traverse the array without adding a comma

			List<String> entry = new ArrayList<>();
			entry.add("1");
			entry.add("2");
			entry.add("3");
			
            StringBuffer jyxmBuffer = new StringBuffer();
            
            for (int i = 0; i < entry.size(); i++) {
    
    
                //证明是最后一个
                if (i == entry.size() - 1) {
    
    
                    jyxmBuffer.append(entry.get(i));
                } else {
    
    
                    jyxmBuffer.append(entry.get(i)).append(",");
                }
            }