我在找一种漂亮的打印方法Map
...
代码:
StringBuilder sb = new StringBuilder();
Iterator<Entry<String, String>> iter = map.entrySet().iterator();
while (iter.hasNext()) {
Entry<String, String> entry = iter.next();
sb.append(entry.getKey());
sb.append('=').append('"');
sb.append(entry.getValue());
sb.append('"');
if (iter.hasNext()) {
sb.append(',').append(' ');
}
}
return sb.toString();
但我相信,有一个更优雅和简洁的方法来做到这一点。
发布于 2018-02-23 11:12:06
或者把你的逻辑放到一个整洁的小班里。
public class PrettyPrintingMap<K, V> {
private Map<K, V> map;
public PrettyPrintingMap(Map<K, V> map) {
this.map = map;
}
public String toString() {
StringBuilder sb = new StringBuilder();
Iterator<Entry<K, V>> iter = map.entrySet().iterator();
while (iter.hasNext()) {
Entry<K, V> entry = iter.next();
sb.append(entry.getKey());
sb.append('=').append('"');
sb.append(entry.getValue());
sb.append('"');
if (iter.hasNext()) {
sb.append(',').append(' ');
}
}
return sb.toString();
}
}
用法:
Map<String, String> myMap = new HashMap<String, String>();
System.out.println(new PrettyPrintingMap<String, String>(myMap));
发布于 2018-02-23 11:48:49
Arrays.toString(map.entrySet().toArray())
https://stackoverflow.com/questions/-100003503
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