Class PrintSafeHashMap

All Implemented Interfaces:, java.lang.Cloneable, java.util.Map

public class PrintSafeHashMap
extends java.util.HashMap
HashMap that can be printed without risking ending in recursive loops if it contains recursive references.
See Also:
Serialized Form
  • Nested Class Summary

    Nested classes/interfaces inherited from class java.util.AbstractMap

    java.util.AbstractMap.SimpleEntry<K extends java.lang.Object,​V extends java.lang.Object>, java.util.AbstractMap.SimpleImmutableEntry<K extends java.lang.Object,​V extends java.lang.Object>

    Nested classes/interfaces inherited from interface java.util.Map

    java.util.Map.Entry<K extends java.lang.Object,​V extends java.lang.Object>
  • Constructor Summary

    Constructor Description
    PrintSafeHashMap​(java.util.Map t)  
  • Method Summary

    Modifier and Type Method Description
    java.lang.String toString()
    Returns a string representation of this map.

    Methods inherited from class java.util.HashMap

    clear, clone, compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, entrySet, forEach, get, getOrDefault, isEmpty, keySet, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, replaceAll, size, values

    Methods inherited from class java.util.AbstractMap

    equals, hashCode

    Methods inherited from class java.lang.Object

    finalize, getClass, notify, notifyAll, wait, wait, wait

    Methods inherited from interface java.util.Map

    equals, hashCode
  • Constructor Details

  • Method Details

    • toString

      public java.lang.String toString()
      Returns a string representation of this map. The string representation consists of a list of key-value mappings in the order returned by the map's entrySet view's iterator, enclosed in braces ("{}"). Adjacent mappings are separated by the characters ", " (comma and space). Each key-value mapping is rendered as the key followed by an equals sign ("=") followed by the associated value. Keys and values are converted to strings as by String.valueOf(Object).

      This implementation creates an empty string buffer, appends a left brace, and iterates over the map's entrySet view, appending the string representation of each map.entry in turn. After appending each entry except the last, the string ", " is appended. Finally a right brace is appended. A string is obtained from the stringbuffer, and returned.

      toString in class java.util.AbstractMap
      a String representation of this map.