对于Apache Commons 3，您希望调用

StringUtils.join(myCollection, ",")

只是修改了前面的示例，以打印包含用户自定义对象的偶数集合。

public class ToStringHelper {

    private  static String separator = "\n";

    public ToStringHelper(String seperator) {
        super();
        ToStringHelper.separator = seperator;

    }

    public  static String toString(List<?> l) {
        StringBuilder sb = new StringBuilder();
        String sep = "";
        for (Object object : l) {
            String v = ToStringBuilder.reflectionToString(object);
            int start = v.indexOf("[");
            int end = v.indexOf("]");
            String st =  v.substring(start,end+1);
            sb.append(sep).append(st);
            sep = separator;
        }
        return sb.toString();
    }

    public static String toString(Map<?,?> m) {
        StringBuilder sb = new StringBuilder();
        String sep = "";
        for (Object object : m.keySet()) {
            String v = ToStringBuilder.reflectionToString(m.get(object));
            int start = v.indexOf("[");
            int end = v.indexOf("]");
            String st =  v.substring(start,end+1);
            sb.append(sep).append(st);
            sep = separator;
        }
        return sb.toString();
    }

    public static String toString(Set<?> s) {
        StringBuilder sb = new StringBuilder();
        String sep = "";
        for (Object object : s) {
            String v = ToStringBuilder.reflectionToString(object);
            int start = v.indexOf("[");
            int end = v.indexOf("]");
            String st =  v.substring(start,end+1);
            sb.append(sep).append(st);
            sep = separator;
        }
        return sb.toString();
    }

    public static void print(List<?> l) {
        System.out.println(toString(l));    
    }
    public static void print(Map<?,?> m) {
        System.out.println(toString(m));    
    }
    public static void print(Set<?> s) {
        System.out.println(toString(s));    
    }

}

你可以使用JAVA中的“Objects”类(从1.7开始就有了)

Collection<String> myCollection = Arrays.asList("1273","123","876","897");
Objects.toString(myCollection);

输出:1273,123,876,897

另一种可能是使用谷歌Guave中的"MoreObjects"类，它提供了许多有用的帮助函数:

MoreObjects.toStringHelper(this).add("NameOfYourObject", myCollection).toString());

输出: yourobject =[1273, 123,876, 897]

番石榴文档

你可以试试

org.apache.commons.lang3.builder.ToStringBuilder.reflectionToString(yourCollection);

由Apache Commons项目提供的MapUtils类提供了一个MapUtils. debugprint方法，它将漂亮地打印你的地图。

番石榴看起来是个不错的选择:

Iterables.toString (myIterable)