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6436374: Graphics.setColor(null) is not documented

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Reviewed-by: serb, pbansal
This commit is contained in:
Prasanta Sadhukhan 2021-02-04 04:13:05 +00:00
parent 82028e70d1
commit 60f440deb9
2 changed files with 48 additions and 0 deletions
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1
src/java.desktop/share/classes/java/awt/Graphics.java
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@ -193,6 +193,7 @@ public abstract class Graphics {
* Sets this graphics context's current color to the specified
* color. All subsequent graphics operations using this graphics
* context use this specified color.
* A null argument is silently ignored.
* @param c the new rendering color.
* @see java.awt.Color
* @see java.awt.Graphics#getColor

47
test/jdk/java/awt/color/TestNullSetColor.java Normal file
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@ -0,0 +1,47 @@
/*
* Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import java.awt.Graphics;
import java.awt.Color;
import java.awt.image.BufferedImage;
/**
* @test
* @bug 6436374
* @summary Verifies that passing null to setColor() will be ignored.
*/
public class TestNullSetColor {
public static void main(String[] argv) {
BufferedImage bi = new BufferedImage(100, 100, BufferedImage.TYPE_INT_ARGB);
Graphics g = bi.getGraphics();
g.setColor(Color.RED);
g.setColor(null);
if (g.getColor() != Color.RED) {
throw new RuntimeException("Setting setColor(null) is not ignored");
}
}
}