1 /*
2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 import java.awt.*;
25 import java.awt.image.BufferedImage;
26 import java.lang.ref.PhantomReference;
27 import java.lang.ref.ReferenceQueue;
28 import java.util.ArrayList;
29 import java.util.Vector;
30
31 /*
32 * @test
33 * @key headful
34 * @summary Verify that disposed frames are collected with GC
35 * @author Dmitriy Ermashov (dmitriy.ermashov@oracle.com)
36 * @library ../../../../lib/client
37 * @build ExtendedRobot
38 * @run main/othervm -Xmx20m FramesGC
39 */
40
41
42 public class FramesGC {
43
44 ExtendedRobot robot;
45 ArrayList<PhantomReference<Frame>> refs = new ArrayList<PhantomReference<Frame>>();
46 ReferenceQueue<Frame> que = new ReferenceQueue<Frame>();
47
48 public static void main(String []args) throws Exception {
49 new FramesGC().doTest();
50 }
51
52 FramesGC() throws Exception{
53 robot = new ExtendedRobot();
54 }
55
56 void doTest() throws Exception {
57 for( int i = 1; i <= 3; i++) {
58 final int j = i;
59 EventQueue.invokeAndWait(() -> {
60 createFrame(j);
61 });
62 }
63 robot.waitForIdle();
64
65 for (Frame f : Frame.getFrames())
66 f.dispose();
67
68 robot.waitForIdle();
69
70 Vector garbage = new Vector();
71 while (true) {
72 try {
73 garbage.add(new byte[1000]);
74 } catch (OutOfMemoryError er) {
75 break;
76 }
77 }
78 garbage = null;
79
80 int count = 1;
81 for(; count <= 3; count++)
82 if(que.remove(5000) == null)
83 break;
84
85 System.out.println("Total no of instances eligible for GC = " + count);
86 if(count < 3)
87 throw new RuntimeException("Count = "+count+". Test failed!");
88
89 }
90
91 void createFrame(int i){
92 Frame frame = new Frame("Frame " + i);
93
94 Button button=new Button("Press Me");
95 TextArea textArea=new TextArea(5,5);
96 TextField textField=new TextField(10);
97 Choice choice=new Choice();
98 choice.add("One");
99 choice.add("Two");
100 choice.add("Three");
101 choice.add("Four");
102 choice.add("Five");
103 List list = new List();
104 list.add("One");
105 list.add("Two");
106 list.add("Three");
107 list.add("Four");
108 list.add("Five");
109 Checkbox checkBox= new Checkbox("Hai");
110 Scrollbar scrollBar=new Scrollbar(Scrollbar.VERTICAL,0,1,0,200);
111 CheckboxGroup checkboxGroup=new CheckboxGroup();
112 Checkbox radioButton=new Checkbox("Hello" ,true, checkboxGroup);
113 Canvas canvas=new Canvas();
114 canvas.setSize(100, 100);
115 canvas.setBackground(java.awt.Color.red);
116 Label label=new Label("I am label.!");
117 Cursor customCursor=null;
118
119 frame.setLayout(new java.awt.FlowLayout());
120
121 button.setCursor(new Cursor(Cursor.CROSSHAIR_CURSOR));
122 label.setCursor(new Cursor(Cursor.TEXT_CURSOR));
123 choice.setCursor(new Cursor(Cursor.WAIT_CURSOR));
124 list.setCursor(new Cursor(Cursor.HAND_CURSOR));
125 checkBox.setCursor(new Cursor(Cursor.MOVE_CURSOR));
126 radioButton.setCursor(new Cursor(Cursor.SE_RESIZE_CURSOR));
127 scrollBar.setCursor(new Cursor(Cursor.NW_RESIZE_CURSOR));
128 canvas.setCursor(new Cursor(Cursor.W_RESIZE_CURSOR));
129 textField.setCursor(new Cursor(Cursor.DEFAULT_CURSOR));
130
131 /* create a custom cursor */
132 Toolkit toolkit = Toolkit.getDefaultToolkit();
133 Dimension d = toolkit.getBestCursorSize(32,32);
134 int color = toolkit.getMaximumCursorColors();
135
136 if(!d.equals(new Dimension(0,0)) && color != 0 )
137 customCursor = toolkit.createCustomCursor(new BufferedImage( 16, 16, BufferedImage.TYPE_INT_RGB ), new Point(10, 10), "custom cursor.");
138 else
139 System.err.println("Platform doesn't support to create a custom cursor.");
140
141 textArea.setCursor(customCursor);
142 frame.add(label);
143 frame.add(button);
144 frame.add(choice);
145 frame.add(list);
146 frame.add(checkBox);
147 frame.add(radioButton);
148 frame.add(scrollBar);
149 frame.add(canvas);
150 frame.add(textArea);
151 frame.add(textField);
152 frame.add(button);
153
154 frame.setLocation(20, 140 * i);
155 frame.pack();
156 frame.setVisible(true);
157 refs.add(new PhantomReference<Frame>(frame, que));
158 }
159
160 }