undefect. CWE-407 — 63 sites patched across 27 ecosystems
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
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648
test/jdk/java/awt/regtesthelpers/Util.java
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648
test/jdk/java/awt/regtesthelpers/Util.java
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@ -0,0 +1,648 @@
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/*
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* Copyright (c) 2006, 2025, 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.
|
||||
*/
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package test.java.awt.regtesthelpers;
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/**
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* <p>This class contains utilities useful for regression testing.
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* <p>When using jtreg you would include this class into the build
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* list via something like:
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* <pre>
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@library ../../../regtesthelpers
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@build Util
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@run main YourTest
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</pre>
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* <p> And put an
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* import test.java.awt.regtesthelpers.Util;
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* into the java source of test.
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*/
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import java.awt.Component;
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import java.awt.Frame;
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import java.awt.Dialog;
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import java.awt.Window;
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import java.awt.Button;
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import java.awt.Point;
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import java.awt.Dimension;
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import java.awt.Rectangle;
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import java.awt.Robot;
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import java.awt.Toolkit;
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import java.awt.IllegalComponentStateException;
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import java.awt.AWTException;
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import java.awt.AWTEvent;
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import java.awt.Color;
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|
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import java.awt.event.InputEvent;
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import java.awt.event.WindowAdapter;
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import java.awt.event.WindowEvent;
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import java.awt.event.ActionEvent;
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import java.awt.event.FocusEvent;
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import java.awt.event.WindowListener;
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import java.awt.event.WindowFocusListener;
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import java.awt.event.FocusListener;
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import java.awt.event.ActionListener;
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|
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import java.lang.reflect.Constructor;
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import java.lang.reflect.Field;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.util.concurrent.atomic.AtomicBoolean;
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public final class Util {
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private Util() {} // this is a helper class with static methods :)
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|
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private volatile static Robot robot;
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|
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/*
|
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* @throws RuntimeException when creation failed
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*/
|
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public static Robot createRobot() {
|
||||
try {
|
||||
if (robot == null) {
|
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robot = new Robot();
|
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}
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return robot;
|
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} catch (AWTException e) {
|
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throw new RuntimeException("Error: unable to create robot", e);
|
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}
|
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}
|
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|
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|
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/**
|
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* Makes the window visible and waits until it's shown.
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*/
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public static void showWindowWait(Window win) {
|
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win.setVisible(true);
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waitTillShown(win);
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}
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|
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/**
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* Moves mouse pointer in the center of given {@code comp} component
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* using {@code robot} parameter.
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*/
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public static void pointOnComp(final Component comp, final Robot robot) {
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Rectangle bounds = new Rectangle(comp.getLocationOnScreen(), comp.getSize());
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robot.mouseMove(bounds.x + bounds.width / 2, bounds.y + bounds.height / 2);
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}
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|
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/**
|
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* Moves mouse pointer in the center of a given {@code comp} component
|
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* and performs a left mouse button click using the {@code robot} parameter
|
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* with the {@code delay} delay between press and release.
|
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*/
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public static void clickOnComp(final Component comp, final Robot robot, int delay) {
|
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pointOnComp(comp, robot);
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robot.delay(delay);
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robot.mousePress(InputEvent.BUTTON1_MASK);
|
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robot.delay(delay);
|
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robot.mouseRelease(InputEvent.BUTTON1_MASK);
|
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}
|
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|
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/**
|
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* Moves mouse pointer in the center of a given {@code comp} component
|
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* and performs a left mouse button click using the {@code robot} parameter
|
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* with the default delay between press and release.
|
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*/
|
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public static void clickOnComp(final Component comp, final Robot robot) {
|
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clickOnComp(comp, robot, 50);
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}
|
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|
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public static Point getTitlePoint(Window decoratedWindow) {
|
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Point p = decoratedWindow.getLocationOnScreen();
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Dimension d = decoratedWindow.getSize();
|
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return new Point(p.x + (int)(d.getWidth()/2),
|
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p.y + (int)(decoratedWindow.getInsets().top/2));
|
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}
|
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|
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/*
|
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* Clicks on a title of Frame/Dialog.
|
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* WARNING: it may fail on some platforms when the window is not wide enough.
|
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*/
|
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public static void clickOnTitle(final Window decoratedWindow, final Robot robot) {
|
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if (decoratedWindow instanceof Frame || decoratedWindow instanceof Dialog) {
|
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Point p = getTitlePoint(decoratedWindow);
|
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robot.mouseMove(p.x, p.y);
|
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robot.delay(50);
|
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robot.mousePress(InputEvent.BUTTON1_MASK);
|
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robot.delay(50);
|
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robot.mouseRelease(InputEvent.BUTTON1_MASK);
|
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}
|
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}
|
||||
|
||||
/**
|
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* Tests whether screen pixel has the expected color performing several
|
||||
* attempts. This method is useful for asynchronous window manager where
|
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* it's impossible to determine when drawing actually takes place.
|
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*
|
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* @param x X position of pixel
|
||||
* @param y Y position of pixel
|
||||
* @param color expected color
|
||||
* @param attempts number of attempts to undertake
|
||||
* @param delay delay before each attempt
|
||||
* @param robot a robot to use for retrieving pixel color
|
||||
* @return true if pixel color matches the color expected, otherwise false
|
||||
*/
|
||||
public static boolean testPixelColor(int x, int y, final Color color, int attempts, int delay, final Robot robot) {
|
||||
while (attempts-- > 0) {
|
||||
robot.delay(delay);
|
||||
Color screen = robot.getPixelColor(x, y);
|
||||
if (screen.equals(color)) {
|
||||
return true;
|
||||
}
|
||||
System.out.println("Robot.getPixelColor Expected: " + color);
|
||||
System.out.println("Robot.getPixelColor Actual: " + screen);
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Tests whether the area within boundaries has the expected color
|
||||
* performing several attempts. This method is useful for asynchronous
|
||||
* window manager where it's impossible to determine when drawing actually
|
||||
* takes place.
|
||||
*
|
||||
* @param bounds position of area
|
||||
* @param color expected color
|
||||
* @param attempts number of attempts to undertake
|
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* @param delay delay before each attempt
|
||||
* @param robot a robot to use for retrieving pixel color
|
||||
* @return true if area color matches the color expected, otherwise false
|
||||
*/
|
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public static boolean testBoundsColor(final Rectangle bounds, final Color color, int attempts, int delay, final Robot robot) {
|
||||
int right = bounds.x + bounds.width - 1;
|
||||
int bottom = bounds.y + bounds.height - 1;
|
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while (attempts-- > 0) {
|
||||
if (testPixelColor(bounds.x, bounds.y, color, 1, delay, robot)
|
||||
&& testPixelColor(right, bounds.y, color, 1, 0, robot)
|
||||
&& testPixelColor(right, bottom, color, 1, 0, robot)
|
||||
&& testPixelColor(bounds.x, bottom, color, 1, 0, robot)) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
public static void waitForIdle(Robot robot) {
|
||||
if (robot == null) {
|
||||
robot = createRobot();
|
||||
}
|
||||
robot.waitForIdle();
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Waits for a notification and for a boolean condition to become true.
|
||||
* The method returns when the above conditions are fullfilled or when the timeout
|
||||
* occurs.
|
||||
*
|
||||
* @param condition the object to be notified and the booelan condition to wait for
|
||||
* @param timeout the maximum time to wait in milliseconds
|
||||
* @param catchExceptions if {@code true} the method catches InterruptedException
|
||||
* @return the final boolean value of the {@code condition}
|
||||
* @throws InterruptedException if the awaiting proccess has been interrupted
|
||||
*/
|
||||
public static boolean waitForConditionEx(final AtomicBoolean condition, long timeout)
|
||||
throws InterruptedException
|
||||
{
|
||||
synchronized (condition) {
|
||||
long startTime = System.currentTimeMillis();
|
||||
while (!condition.get()) {
|
||||
condition.wait(timeout);
|
||||
if (System.currentTimeMillis() - startTime >= timeout ) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
return condition.get();
|
||||
}
|
||||
|
||||
/*
|
||||
* The same as {@code waitForConditionEx(AtomicBoolean, long)} except that it
|
||||
* doesn't throw InterruptedException.
|
||||
*/
|
||||
public static boolean waitForCondition(final AtomicBoolean condition, long timeout) {
|
||||
try {
|
||||
return waitForConditionEx(condition, timeout);
|
||||
} catch (InterruptedException e) {
|
||||
throw new RuntimeException("Error: unexpected exception caught!", e);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* The same as {@code waitForConditionEx(AtomicBoolean, long)} but without a timeout.
|
||||
*/
|
||||
public static void waitForConditionEx(final AtomicBoolean condition)
|
||||
throws InterruptedException
|
||||
{
|
||||
synchronized (condition) {
|
||||
while (!condition.get()) {
|
||||
condition.wait();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* The same as {@code waitForConditionEx(AtomicBoolean)} except that it
|
||||
* doesn't throw InterruptedException.
|
||||
*/
|
||||
public static void waitForCondition(final AtomicBoolean condition) {
|
||||
try {
|
||||
waitForConditionEx(condition);
|
||||
} catch (InterruptedException e) {
|
||||
throw new RuntimeException("Error: unexpected exception caught!", e);
|
||||
}
|
||||
}
|
||||
|
||||
public static void waitTillShownEx(final Component comp) throws InterruptedException {
|
||||
while (true) {
|
||||
try {
|
||||
Thread.sleep(100);
|
||||
comp.getLocationOnScreen();
|
||||
break;
|
||||
} catch (IllegalComponentStateException e) {}
|
||||
}
|
||||
}
|
||||
public static void waitTillShown(final Component comp) {
|
||||
try {
|
||||
waitTillShownEx(comp);
|
||||
} catch (InterruptedException e) {
|
||||
throw new RuntimeException("Error: unexpected exception caught!", e);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Drags from one point to another with the specified mouse button pressed.
|
||||
*
|
||||
* @param robot a robot to use for moving the mouse, etc.
|
||||
* @param startPoint a start point of the drag
|
||||
* @param endPoint an end point of the drag
|
||||
* @param button one of {@code InputEvent.BUTTON1_MASK},
|
||||
* {@code InputEvent.BUTTON2_MASK}, {@code InputEvent.BUTTON3_MASK}
|
||||
*
|
||||
* @throws IllegalArgumentException if {@code button} is not one of
|
||||
* {@code InputEvent.BUTTON1_MASK}, {@code InputEvent.BUTTON2_MASK},
|
||||
* {@code InputEvent.BUTTON3_MASK}
|
||||
*/
|
||||
public static void drag(Robot robot, Point startPoint, Point endPoint, int button) {
|
||||
if (!(button == InputEvent.BUTTON1_MASK
|
||||
|| button == InputEvent.BUTTON2_MASK
|
||||
|| button == InputEvent.BUTTON3_MASK
|
||||
|| button == InputEvent.BUTTON1_DOWN_MASK
|
||||
|| button == InputEvent.BUTTON2_DOWN_MASK
|
||||
|| button == InputEvent.BUTTON3_DOWN_MASK
|
||||
))
|
||||
{
|
||||
throw new IllegalArgumentException("invalid mouse button");
|
||||
}
|
||||
|
||||
robot.mouseMove(startPoint.x, startPoint.y);
|
||||
robot.mousePress(button);
|
||||
try {
|
||||
mouseMove(robot, startPoint, endPoint);
|
||||
} finally {
|
||||
robot.mouseRelease(button);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Moves the mouse pointer from one point to another.
|
||||
* Uses Bresenham's algorithm.
|
||||
*
|
||||
* @param robot a robot to use for moving the mouse
|
||||
* @param startPoint a start point of the drag
|
||||
* @param endPoint an end point of the drag
|
||||
*/
|
||||
public static void mouseMove(Robot robot, Point startPoint, Point endPoint) {
|
||||
int dx = endPoint.x - startPoint.x;
|
||||
int dy = endPoint.y - startPoint.y;
|
||||
|
||||
int ax = Math.abs(dx) * 2;
|
||||
int ay = Math.abs(dy) * 2;
|
||||
|
||||
int sx = signWOZero(dx);
|
||||
int sy = signWOZero(dy);
|
||||
|
||||
int x = startPoint.x;
|
||||
int y = startPoint.y;
|
||||
|
||||
int d = 0;
|
||||
|
||||
if (ax > ay) {
|
||||
d = ay - ax/2;
|
||||
while (true){
|
||||
robot.mouseMove(x, y);
|
||||
robot.delay(50);
|
||||
|
||||
if (x == endPoint.x){
|
||||
return;
|
||||
}
|
||||
if (d >= 0){
|
||||
y = y + sy;
|
||||
d = d - ax;
|
||||
}
|
||||
x = x + sx;
|
||||
d = d + ay;
|
||||
}
|
||||
} else {
|
||||
d = ax - ay/2;
|
||||
while (true){
|
||||
robot.mouseMove(x, y);
|
||||
robot.delay(50);
|
||||
|
||||
if (y == endPoint.y){
|
||||
return;
|
||||
}
|
||||
if (d >= 0){
|
||||
x = x + sx;
|
||||
d = d - ay;
|
||||
}
|
||||
y = y + sy;
|
||||
d = d + ax;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private static int signWOZero(int i){
|
||||
return (i > 0)? 1: -1;
|
||||
}
|
||||
|
||||
private static int sign(int n) {
|
||||
return n < 0 ? -1 : n == 0 ? 0 : 1;
|
||||
}
|
||||
|
||||
/** Returns {@code WindowListener} instance that diposes {@code Window} on
|
||||
* "window closing" event.
|
||||
*
|
||||
* @return the {@code WindowListener} instance that could be set
|
||||
* on a {@code Window}. After that
|
||||
* the {@code Window} is disposed when "window closed"
|
||||
* event is sent to the {@code Window}
|
||||
*/
|
||||
public static WindowListener getClosingWindowAdapter() {
|
||||
return new WindowAdapter () {
|
||||
public void windowClosing(WindowEvent e) {
|
||||
e.getWindow().dispose();
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
/*
|
||||
* The values directly map to the ones of sun.awt.X11.XWM class.
|
||||
*/
|
||||
public final static int
|
||||
UNDETERMINED_WM = 1,
|
||||
NO_WM = 2,
|
||||
OTHER_WM = 3,
|
||||
OPENLOOK_WM = 4,
|
||||
MOTIF_WM = 5,
|
||||
CDE_WM = 6,
|
||||
ENLIGHTEN_WM = 7,
|
||||
KDE2_WM = 8,
|
||||
SAWFISH_WM = 9,
|
||||
ICE_WM = 10,
|
||||
METACITY_WM = 11,
|
||||
COMPIZ_WM = 12,
|
||||
LG3D_WM = 13,
|
||||
CWM_WM = 14,
|
||||
MUTTER_WM = 15;
|
||||
|
||||
/*
|
||||
* Returns -1 in case of not X Window or any problems.
|
||||
*/
|
||||
public static int getWMID() {
|
||||
Class clazz = null;
|
||||
try {
|
||||
if ("sun.awt.X11.XToolkit".equals(Toolkit.getDefaultToolkit().getClass().getName())) {
|
||||
clazz = Class.forName("sun.awt.X11.XWM");
|
||||
}
|
||||
} catch (ClassNotFoundException cnfe) {
|
||||
cnfe.printStackTrace();
|
||||
}
|
||||
if (clazz == null) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
try {
|
||||
final Class _clazz = clazz;
|
||||
Method m_addExports = Class.forName("java.awt.Helper").getDeclaredMethod("addExports", String.class, java.lang.Module.class);
|
||||
// We may be called from non-X11 system, and this permission cannot be delegated to a test.
|
||||
m_addExports.invoke(null, "sun.awt.X11", Util.class.getModule());
|
||||
Method m_getWMID = null;
|
||||
try {
|
||||
m_getWMID = _clazz.getDeclaredMethod("getWMID", new Class[] {});
|
||||
if (m_getWMID != null) {
|
||||
m_getWMID.setAccessible(true);
|
||||
}
|
||||
} catch (NoSuchMethodException e) {
|
||||
assert false;
|
||||
}
|
||||
return (Integer) m_getWMID.invoke(null, new Object[]{});
|
||||
} catch (ClassNotFoundException | NoSuchMethodException
|
||||
| IllegalAccessException | InvocationTargetException e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
|
||||
//Cleans all the references
|
||||
public static void cleanUp() {
|
||||
apListener = null;
|
||||
fgListener = null;
|
||||
wgfListener = null;
|
||||
}
|
||||
|
||||
|
||||
////////////////////////////
|
||||
// Some stuff to test focus.
|
||||
////////////////////////////
|
||||
|
||||
private static WindowGainedFocusListener wgfListener = new WindowGainedFocusListener();
|
||||
private static FocusGainedListener fgListener = new FocusGainedListener();
|
||||
private static ActionPerformedListener apListener = new ActionPerformedListener();
|
||||
|
||||
private abstract static class EventListener {
|
||||
AtomicBoolean notifier = new AtomicBoolean(false);
|
||||
Component comp;
|
||||
boolean printEvent;
|
||||
|
||||
public void listen(Component comp, boolean printEvent) {
|
||||
this.comp = comp;
|
||||
this.printEvent = printEvent;
|
||||
notifier.set(false);
|
||||
setListener(comp);
|
||||
}
|
||||
|
||||
public AtomicBoolean getNotifier() {
|
||||
return notifier;
|
||||
}
|
||||
|
||||
abstract void setListener(Component comp);
|
||||
|
||||
void printAndNotify(AWTEvent e) {
|
||||
if (printEvent) {
|
||||
System.err.println(e);
|
||||
}
|
||||
synchronized (notifier) {
|
||||
notifier.set(true);
|
||||
notifier.notifyAll();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private static class WindowGainedFocusListener extends EventListener implements WindowFocusListener {
|
||||
|
||||
void setListener(Component comp) {
|
||||
((Window)comp).addWindowFocusListener(this);
|
||||
}
|
||||
|
||||
public void windowGainedFocus(WindowEvent e) {
|
||||
|
||||
((Window)comp).removeWindowFocusListener(this);
|
||||
printAndNotify(e);
|
||||
}
|
||||
|
||||
public void windowLostFocus(WindowEvent e) {}
|
||||
}
|
||||
|
||||
private static class FocusGainedListener extends EventListener implements FocusListener {
|
||||
|
||||
void setListener(Component comp) {
|
||||
comp.addFocusListener(this);
|
||||
}
|
||||
|
||||
public void focusGained(FocusEvent e) {
|
||||
comp.removeFocusListener(this);
|
||||
printAndNotify(e);
|
||||
}
|
||||
|
||||
public void focusLost(FocusEvent e) {}
|
||||
}
|
||||
|
||||
private static class ActionPerformedListener extends EventListener implements ActionListener {
|
||||
|
||||
void setListener(Component comp) {
|
||||
((Button)comp).addActionListener(this);
|
||||
}
|
||||
|
||||
public void actionPerformed(ActionEvent e) {
|
||||
((Button)comp).removeActionListener(this);
|
||||
printAndNotify(e);
|
||||
}
|
||||
}
|
||||
|
||||
private static boolean trackEvent(int eventID, Component comp, Runnable action, int time, boolean printEvent) {
|
||||
EventListener listener = null;
|
||||
|
||||
switch (eventID) {
|
||||
case WindowEvent.WINDOW_GAINED_FOCUS:
|
||||
listener = wgfListener;
|
||||
break;
|
||||
case FocusEvent.FOCUS_GAINED:
|
||||
listener = fgListener;
|
||||
break;
|
||||
case ActionEvent.ACTION_PERFORMED:
|
||||
listener = apListener;
|
||||
break;
|
||||
}
|
||||
|
||||
listener.listen(comp, printEvent);
|
||||
action.run();
|
||||
return Util.waitForCondition(listener.getNotifier(), time);
|
||||
}
|
||||
|
||||
/*
|
||||
* Tracks WINDOW_GAINED_FOCUS event for a window caused by an action.
|
||||
* @param window the window to track the event for
|
||||
* @param action the action to perform
|
||||
* @param time the max time to wait for the event
|
||||
* @param printEvent should the event received be printed or doesn't
|
||||
* @return true if the event has been received, otherwise false
|
||||
*/
|
||||
public static boolean trackWindowGainedFocus(Window window, Runnable action, int time, boolean printEvent) {
|
||||
return trackEvent(WindowEvent.WINDOW_GAINED_FOCUS, window, action, time, printEvent);
|
||||
}
|
||||
|
||||
/*
|
||||
* Tracks FOCUS_GAINED event for a component caused by an action.
|
||||
* @see #trackWindowGainedFocus
|
||||
*/
|
||||
public static boolean trackFocusGained(Component comp, Runnable action, int time, boolean printEvent) {
|
||||
return trackEvent(FocusEvent.FOCUS_GAINED, comp, action, time, printEvent);
|
||||
}
|
||||
|
||||
/*
|
||||
* Tracks ACTION_PERFORMED event for a button caused by an action.
|
||||
* @see #trackWindowGainedFocus
|
||||
*/
|
||||
public static boolean trackActionPerformed(Button button, Runnable action, int time, boolean printEvent) {
|
||||
return trackEvent(ActionEvent.ACTION_PERFORMED, button, action, time, printEvent);
|
||||
}
|
||||
|
||||
/*
|
||||
* Requests focus on the component provided and waits for the result.
|
||||
* @return true if the component has been focused, false otherwise.
|
||||
*/
|
||||
public static boolean focusComponent(Component comp, int time) {
|
||||
return focusComponent(comp, time, false);
|
||||
}
|
||||
public static boolean focusComponent(final Component comp, int time, boolean printEvent) {
|
||||
return trackFocusGained(comp,
|
||||
new Runnable() {
|
||||
public void run() {
|
||||
comp.requestFocus();
|
||||
}
|
||||
},
|
||||
time, printEvent);
|
||||
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Invokes the <code>task</code> on the EDT thread.
|
||||
*
|
||||
* @return result of the <code>task</code>
|
||||
*/
|
||||
public static <T> T invokeOnEDT(final java.util.concurrent.Callable<T> task) throws Exception {
|
||||
final java.util.List<T> result = new java.util.ArrayList<T>(1);
|
||||
final Exception[] exception = new Exception[1];
|
||||
|
||||
javax.swing.SwingUtilities.invokeAndWait(new Runnable() {
|
||||
|
||||
@Override
|
||||
public void run() {
|
||||
try {
|
||||
result.add(task.call());
|
||||
} catch (Exception e) {
|
||||
exception[0] = e;
|
||||
}
|
||||
}
|
||||
});
|
||||
|
||||
if (exception[0] != null) {
|
||||
throw exception[0];
|
||||
}
|
||||
|
||||
return result.get(0);
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue