Claude
e0cb6e83e2
Runnable sources, broken examples and captured transcripts for the ankurm.com JEP 512 article, including the measured launch order and a private-constructor difference between 25 and 27. Co-Authored-By: Claude Sonnet 5 <[email protected]> Claude-Session: https://claude.ai/code/session_01TF9JWFvJSNm6HVzswzZU5a
26 lines
928 B
Java
26 lines
928 B
Java
// A compact source file is a whole class body: fields, methods, and nested types all sit at the top level.
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// Nothing here is imported. List, Map, TreeMap, Collectors and BigDecimal all live in java.base.
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String greeting = "hello";
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int calls = 0;
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record Point(int x, int y) {
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double distance() { return Math.sqrt(x * x + y * y); }
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}
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String shout(String s) {
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calls++;
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return s.toUpperCase() + "!";
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}
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void main() {
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List<String> words = List.of("banana", "apple", "cherry");
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Map<String, Integer> lengths = new TreeMap<>();
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for (String w : words) lengths.put(w, w.length());
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IO.println(shout(greeting));
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IO.println(words.stream().sorted().collect(Collectors.joining(", ")));
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IO.println(lengths);
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IO.println(new BigDecimal("1.10").add(BigDecimal.ONE));
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IO.println(new Point(3, 4) + " is " + new Point(3, 4).distance() + " from the origin");
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IO.println("calls so far: " + calls);
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}
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