30 lines
907 B
Java
30 lines
907 B
Java
// collections/BasicRecord.java
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// (c)2021 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://OnJava8.com for more book information.
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// {NewFeature} Since JDK 16
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import java.util.*;
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record Employee(String name, int id) {}
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public class BasicRecord {
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public static void main(String[] args) {
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var bob = new Employee("Bob Dobbs", 11);
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var dot = new Employee("Dorothy Gale", 9);
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// bob.id = 12; // Error:
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// id has private access in Employee
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System.out.println(bob.name()); // Accessor
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System.out.println(bob.id()); // Accessor
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System.out.println(bob); // toString()
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// Employee works as the key in a Map:
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var map = Map.of(bob, "A", dot, "B");
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System.out.println(map);
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}
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}
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/* Output:
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Bob Dobbs
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11
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Employee[name=Bob Dobbs, id=11]
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{Employee[name=Dorothy Gale, id=9]=B, Employee[name=Bob Dobbs, id=11]=A}
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*/
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