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28 lines
744 B
HTML
28 lines
744 B
HTML
<html>
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<body>
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Reports allocations of arrays with known lengths of zero when there is a constant for that in the class of the array's element type.
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As zero-length arrays are immutable, you can save memory reusing the same array instance.
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<p><b>Example:</b></p>
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<pre><code>
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class Item {
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// Public zero-length array constant that can be reused
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public static final Item[] EMPTY_ARRAY = new Item[0];
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}
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class EmptyNode {
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Item[] getChildren() {
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// Unnecessary zero-length array creation
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return new Item[0];
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}
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}
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</code></pre>
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<p>After the quick-fix is applied:</p>
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<pre><code>
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class EmptyNode {
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Item[] getChildren() {
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return Item.EMPTY_ARRAY;
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}
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}
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</code></pre>
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<!-- tooltip end -->
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</body>
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</html> |