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Leonid Shalupovandintellij-monorepo-bot
40795fe787
GitOrigin-RevId: 8b2b63fc6db476ca0c2cfe5cadd84db6c4236d0f
49 lines
1.9 KiB
HTML
49 lines
1.9 KiB
HTML
<html>
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<body>
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Reports Stream API chains, <code>Iterable.forEach()</code>, and <code>Map.forEach()</code> calls that can be automatically converted into classical loops.
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This can help to downgrade for backward compatibility with earlier Java versions.
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<p><b>Example:</b></p>
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<pre><code>
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String joinNonEmpty(List<String> list) {
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return list.stream() // Stream can be converted to loop
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.filter(s -> !s.isEmpty())
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.map(String::trim)
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.collect(Collectors.joining(", "));
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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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String joinNonEmpty(List<String> list) {
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StringJoiner joiner = new StringJoiner(", ");
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for (String s : list) {
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if (!s.isEmpty()) {
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String trim = s.trim();
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joiner.add(trim);
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}
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}
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return joiner.toString();
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}
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</code></pre>
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<p>
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Note that sometimes this inspection might cause slight semantic changes.
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Special care should be taken when it comes to short-circuiting, as it's not specified how many elements will be actually read when
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the stream short-circuits.
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</p>
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<!-- tooltip end -->
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<p>Configure the inspection:</p>
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<p>Use the <b>Iterate unknown Stream sources via Stream.iterator()</b> option to suggest conversions for streams with unrecognized source.
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In this case, iterator will be created from the stream.
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For example, when checkbox is selected, the conversion will be suggested here:</p>
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<pre><code>
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List<ProcessHandle> handles = ProcessHandle.allProcesses().collect(Collectors.toList());</code></pre>
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<p>In this case, the result will be as follows:</p>
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<pre><code>
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List<ProcessHandle> handles = new ArrayList<>();
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for (Iterator<ProcessHandle> it = ProcessHandle.allProcesses().iterator(); it.hasNext(); ) {
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ProcessHandle allProcess = it.next();
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handles.add(allProcess);
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}
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</code></pre>
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<p><small>New in 2017.1</small></p>
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</body>
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</html> |