/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 vote133 views1 answer
Using template strings in java
Java
0 vote129 views1 answer
Sysout shortcut sysout + Tab VS Code
Java
8 votes196 views1 answer
Error could not create the java virtual machine ubuntu 20.04
Java
-2 votes96 views2 answers
How to use beacon power in minecraft in java edition
Java
8 votes136 views5 answers
Print arraylist java
Java
3 votes135 views1 answer
Printf java boolean
Java
1 vote138 views1 answer
How to create an array without knowing the size java
Java
0 vote146 views1 answer
Enum type spring boot entity
Java Spring
-1 vote127 views1 answer
Java swing change label icon
Java
10 votes123 views1 answer
Intent android open activity
Java