/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

2 votes181 views2 answers
How to navigate to last back stack in android studio
Java
0 vote225 views1 answer
Copy one string to another without using any loops or assignment operator
Java
4 votes182 views1 answer
Java calculate fps
Java
1 vote144 views1 answer
Java get size of jframe
Java
0 vote187 views2 answers
Webview load url
Java
1 vote241 views1 answer
Java robot left click
Java
2 votes143 views1 answer
Printing a treeset java
Java
15 votes188 views1 answer
Java random w3
Java
1 vote204 views2 answers
How to clear text fields in java
Java
7 votes205 views3 answers
How to sort a list in java
Java