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ConstructorProperties.java
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76 lines (67 loc) · 1.54 KB
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/*
* Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*/
package java.beans;
import java.lang.annotation.*;
import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.RetentionPolicy.*;
/**
<p>An annotation on a constructor that shows how the parameters of
that constructor correspond to the constructed object's getter
methods. For example:
<blockquote>
<pre>
public class Point {
@ConstructorProperties({"x", "y"})
public Point(int x, int y) {
this.x = x;
this.y = y;
}
public int getX() {
return x;
}
public int getY() {
return y;
}
private final int x, y;
}
</pre>
</blockquote>
The annotation shows that the first parameter of the constructor
can be retrieved with the {@code getX()} method and the second with
the {@code getY()} method. Since parameter names are not in
general available at runtime, without the annotation there would be
no way to know whether the parameters correspond to {@code getX()}
and {@code getY()} or the other way around.
@since 1.6
*/
@Documented @Target(CONSTRUCTOR) @Retention(RUNTIME)
public @interface ConstructorProperties {
/**
<p>The getter names.</p>
@return the getter names corresponding to the parameters in the
annotated constructor.
*/
String[] value();
}