JDK8: StackOverflowError of HashMap due to self reference
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| $ ~/sdk/jdk1.8.0/Contents/Home/bin/java HashMapStackOverflow | |
| Exception in thread "main" java.lang.StackOverflowError | |
| at java.util.AbstractMap.hashCode(AbstractMap.java:505) | |
| at java.util.Objects.hashCode(Objects.java:98) | |
| at java.util.HashMap$Node.hashCode(HashMap.java:296) | |
| at java.util.AbstractMap.hashCode(AbstractMap.java:507) | |
| at java.util.Objects.hashCode(Objects.java:98) | |
| at java.util.HashMap$Node.hashCode(HashMap.java:296) | |
| at java.util.AbstractMap.hashCode(AbstractMap.java:507) | |
| at java.util.Objects.hashCode(Objects.java:98) | |
| at java.util.HashMap$Node.hashCode(HashMap.java:296) | |
| at java.util.AbstractMap.hashCode(AbstractMap.java:507) | |
| at java.util.Objects.hashCode(Objects.java:98) | |
| at java.util.HashMap$Node.hashCode(HashMap.java:296) | |
| at java.util.AbstractMap.hashCode(AbstractMap.java:507) | |
| at java.util.Objects.hashCode(Objects.java:98) | |
| at java.util.HashMap$Node.hashCode(HashMap.java:296) | |
| at java.util.AbstractMap.hashCode(AbstractMap.java:507) | |
| ... |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| import java.util.*; | |
| public class HashMapStackOverflow { | |
| public static void main(String[] args) throws Exception { | |
| HashMap<String, Object> map = new HashMap<>(); | |
| map.put("self", map); | |
| System.out.println(map.hashCode()); | |
| } | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
nice~