/Java/ClassCastException Casting toArray() method

ClassCastException Casting toArray() method

Collection c = new ArrayList();
Integer obj = new Integer(1);
c.add(obj);

    // this would trigger the rule (and throw a ClassCastException if executed)
Integer[] a = (Integer [])c.toArray();

   // this is fine and will not trigger the rule
Integer[] b = (Integer [])c.toArray(new Integer[c.size()]);

Source: pmd.github.io

Similar codes

0 vote118 views1 answer
Android videoview not smooth for mp4
Java
0 vote99 views1 answer
JsonArray get first Object
Java
0 vote101 views1 answer
Function compose method java 8
Java
1 vote99 views1 answer
How to maximize window in selenium java
Java
4 votes93 views3 answers
Java string to uuid
Java
2 votes91 views1 answer
Java array loop
Java
4 votes132 views3 answers
Creating a 2d arraylist in java
Java
3 votes101 views1 answer
Spring bean xml configuration
Java
1 vote92 views1 answer
Do you have to implement all methods of an interface java
Java
0 vote114 views1 answer
Send whatsapp message java android studio
Java