Joiner
字符串拼接对象
on方法
on 以空格为分隔符
join内是拼接的对象:
迭代器对象
、数组
、可变参数
等
1 | //例子 |
Joiner.MapJoiner
- MapJoiner 是 Joiner 的内部静态类,用于帮助将 Map 对象拼接成字符串。
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15//例子1
Joiner.on(" ").withKeyValueSeparator("=").join(ImmutableMap.of("收件人","Nimo","联系方式","123","收件地址","浙江省杭州市滨江区XXXX"));
//result
收件人=Nimo 联系方式=123 收件地址=浙江省杭州市滨江区XXXX
//例子2
MaptestMap = Maps.newLinkedHashMap();
testMap.put("Washington D.C", "Redskins");
testMap.put("New York City", "Giants");
testMap.put("Philadelphia", "Eagles");
testMap.put("Dallas", "Cowboys");
String returnedString = Joiner.on("#").withKeyValueSeparator("=").join(testMap);
System.out.println(returnedString);
//result
Washington D.C=Redskins#New York City=Giants#Philadelphia=Eagles#Dallas=Cowboys
end 😄