给定一个字符串集合,如何在纯Java中将它们连接起来,而不使用外部库?
考虑以下变量:
Collection<String> data = Arrays.asList("Snap", "Crackle", "Pop");
String separator = ", ";
String joined; // let's create this, shall we?
以下是我在Guava中的做法:
joined = Joiner.on(separator).join(data);
而在 Apache Commons / Lang 中:
joined = StringUtils.join(data, separator);
但在普通的Java中,真的没有比这更好的方法吗?
StringBuilder sb = new StringBuilder();
for(String item : data){
if(sb.length()>0)sb.append(separator);
sb.append(item);
}
joined = sb.toString();