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Sonar-PMD is a plugin that provides coding rules from PMD.

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Instead of manually copying data between two arrays, use the efficient Arrays.copyOf or System.arraycopy method instead.

Noncompliant Code Example
int[] a = new int[10];
int[] b = new int[10];

for (int i = 0; i < 10; i++) {
  b[i] = a[i];
}


Compliant Solution
int[] a = new int[10];
int[] b;

// Option 1
b = Arrays.copyOf(a, a.length);

// Option 2
System.arraycopy(a, 0, b, 0, a.length);