Mercurial > jdk8-mips64-public > hotspot / file revision
test/compiler/stable/TestStableByte.java@8c95980d0b66
test/compiler/stable/TestStableByte.java
Sat, 07 Nov 2020 10:30:02 +0800
- author
- aoqi
- date
- Sat, 07 Nov 2020 10:30:02 +0800
- changeset 10026
- 8c95980d0b66
- parent 7994
- 04ff2f6cd0eb
- permissions
- -rw-r--r--
Added tag mips-jdk8u275-b01 for changeset d3b4d62f391f
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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
26 /*
27 * @test TestStableByte
28 * @summary tests on stable fields and arrays
29 * @library /testlibrary /testlibrary/whitebox
30 * @build TestStableByte StableConfiguration sun.hotspot.WhiteBox
31 * @run main ClassFileInstaller sun.hotspot.WhiteBox sun.hotspot.WhiteBox$WhiteBoxPermission
32 * @run main ClassFileInstaller
33 * java/lang/invoke/StableConfiguration
34 * java/lang/invoke/TestStableByte
35 * java/lang/invoke/TestStableByte$ByteStable
36 * java/lang/invoke/TestStableByte$StaticByteStable
37 * java/lang/invoke/TestStableByte$VolatileByteStable
38 * java/lang/invoke/TestStableByte$ByteArrayDim1
39 * java/lang/invoke/TestStableByte$ByteArrayDim2
40 * java/lang/invoke/TestStableByte$ByteArrayDim3
41 * java/lang/invoke/TestStableByte$ByteArrayDim4
42 * java/lang/invoke/TestStableByte$ObjectArrayLowerDim0
43 * java/lang/invoke/TestStableByte$ObjectArrayLowerDim1
44 * java/lang/invoke/TestStableByte$NestedStableField
45 * java/lang/invoke/TestStableByte$NestedStableField$A
46 * java/lang/invoke/TestStableByte$NestedStableField1
47 * java/lang/invoke/TestStableByte$NestedStableField1$A
48 * java/lang/invoke/TestStableByte$NestedStableField2
49 * java/lang/invoke/TestStableByte$NestedStableField2$A
50 * java/lang/invoke/TestStableByte$NestedStableField3
51 * java/lang/invoke/TestStableByte$NestedStableField3$A
52 * java/lang/invoke/TestStableByte$DefaultValue
53 * java/lang/invoke/TestStableByte$DefaultStaticValue
54 * java/lang/invoke/TestStableByte$ObjectArrayLowerDim2
55 *
56 * @run main/othervm -Xbootclasspath/a:.
57 * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xcomp
58 * -XX:-TieredCompilation
59 * -XX:+FoldStableValues
60 * -XX:CompileOnly=::get,::get1,::get2,::get3,::get4
61 * java.lang.invoke.TestStableByte
62 * @run main/othervm -Xbootclasspath/a:.
63 * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xcomp
64 * -XX:-TieredCompilation
65 * -XX:-FoldStableValues
66 * -XX:CompileOnly=::get,::get1,::get2,::get3,::get4
67 * java.lang.invoke.TestStableByte
68 *
69 * @run main/othervm -Xbootclasspath/a:.
70 * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xcomp
71 * -XX:+TieredCompilation -XX:TieredStopAtLevel=1
72 * -XX:+FoldStableValues
73 * -XX:CompileOnly=::get,::get1,::get2,::get3,::get4
74 * java.lang.invoke.TestStableByte
75 * @run main/othervm -Xbootclasspath/a:.
76 * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xcomp
77 * -XX:+TieredCompilation -XX:TieredStopAtLevel=1
78 * -XX:-FoldStableValues
79 * -XX:CompileOnly=::get,::get1,::get2,::get3,::get4
80 * java.lang.invoke.TestStableByte
81 *
82 */
83 package java.lang.invoke;
85 import java.lang.reflect.InvocationTargetException;
87 public class TestStableByte {
88 static final boolean isStableEnabled = StableConfiguration.isStableEnabled;
89 static final boolean isServerWithStable = StableConfiguration.isServerWithStable;
91 public static void main(String[] args) throws Exception {
92 run(DefaultValue.class);
93 run(ByteStable.class);
94 run(DefaultStaticValue.class);
95 run(StaticByteStable.class);
96 run(VolatileByteStable.class);
98 // @Stable arrays: Dim 1-4
99 run(ByteArrayDim1.class);
100 run(ByteArrayDim2.class);
101 run(ByteArrayDim3.class);
102 run(ByteArrayDim4.class);
104 // @Stable Object field: dynamic arrays
105 run(ObjectArrayLowerDim0.class);
106 run(ObjectArrayLowerDim1.class);
107 run(ObjectArrayLowerDim2.class);
109 // Nested @Stable fields
110 run(NestedStableField.class);
111 run(NestedStableField1.class);
112 run(NestedStableField2.class);
113 run(NestedStableField3.class);
115 if (failed) {
116 throw new Error("TEST FAILED");
117 }
118 }
120 /* ==================================================== */
122 static class DefaultValue {
123 public @Stable byte v;
125 public static final DefaultValue c = new DefaultValue();
126 public static byte get() { return c.v; }
127 public static void test() throws Exception {
128 byte val1 = get();
129 c.v = 1; byte val2 = get();
130 assertEquals(val1, 0);
131 assertEquals(val2, 1);
132 }
133 }
135 /* ==================================================== */
137 static class ByteStable {
138 public @Stable byte v;
140 public static final ByteStable c = new ByteStable();
141 public static byte get() { return c.v; }
142 public static void test() throws Exception {
143 c.v = 5; byte val1 = get();
144 c.v = 127; byte val2 = get();
145 assertEquals(val1, 5);
146 assertEquals(val2, (isStableEnabled ? 5 : 127));
147 }
148 }
150 /* ==================================================== */
152 static class DefaultStaticValue {
153 public static @Stable byte v;
155 public static final DefaultStaticValue c = new DefaultStaticValue();
156 public static byte get() { return c.v; }
157 public static void test() throws Exception {
158 byte val1 = get();
159 c.v = 1; byte val2 = get();
160 assertEquals(val1, 0);
161 assertEquals(val2, 1);
162 }
163 }
165 /* ==================================================== */
167 static class StaticByteStable {
168 public static @Stable byte v;
170 public static final StaticByteStable c = new StaticByteStable();
171 public static byte get() { return c.v; }
172 public static void test() throws Exception {
173 c.v = 5; byte val1 = get();
174 c.v = 127; byte val2 = get();
175 assertEquals(val1, 5);
176 assertEquals(val2, (isStableEnabled ? 5 : 127));
177 }
178 }
180 /* ==================================================== */
182 static class VolatileByteStable {
183 public @Stable volatile byte v;
185 public static final VolatileByteStable c = new VolatileByteStable();
186 public static byte get() { return c.v; }
187 public static void test() throws Exception {
188 c.v = 5; byte val1 = get();
189 c.v = 127; byte val2 = get();
190 assertEquals(val1, 5);
191 assertEquals(val2, (isStableEnabled ? 5 : 127));
192 }
193 }
195 /* ==================================================== */
196 // @Stable array == field && all components are stable
198 static class ByteArrayDim1 {
199 public @Stable byte[] v;
201 public static final ByteArrayDim1 c = new ByteArrayDim1();
202 public static byte get() { return c.v[0]; }
203 public static byte get1() { return c.v[10]; }
204 public static byte[] get2() { return c.v; }
205 public static void test() throws Exception {
206 {
207 c.v = new byte[1]; c.v[0] = 1; byte val1 = get();
208 c.v[0] = 2; byte val2 = get();
209 assertEquals(val1, 1);
210 assertEquals(val2, (isServerWithStable ? 1 : 2));
212 c.v = new byte[1]; c.v[0] = 3; byte val3 = get();
213 assertEquals(val3, (isStableEnabled ? (isServerWithStable ? 1 : 2)
214 : 3));
215 }
217 {
218 c.v = new byte[20]; c.v[10] = 1; byte val1 = get1();
219 c.v[10] = 2; byte val2 = get1();
220 assertEquals(val1, 1);
221 assertEquals(val2, (isServerWithStable ? 1 : 2));
223 c.v = new byte[20]; c.v[10] = 3; byte val3 = get1();
224 assertEquals(val3, (isStableEnabled ? (isServerWithStable ? 1 : 2)
225 : 3));
226 }
228 {
229 c.v = new byte[1]; byte[] val1 = get2();
230 c.v = new byte[1]; byte[] val2 = get2();
231 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
232 }
233 }
234 }
236 /* ==================================================== */
238 static class ByteArrayDim2 {
239 public @Stable byte[][] v;
241 public static final ByteArrayDim2 c = new ByteArrayDim2();
242 public static byte get() { return c.v[0][0]; }
243 public static byte[] get1() { return c.v[0]; }
244 public static byte[][] get2() { return c.v; }
245 public static void test() throws Exception {
246 {
247 c.v = new byte[1][1]; c.v[0][0] = 1; byte val1 = get();
248 c.v[0][0] = 2; byte val2 = get();
249 assertEquals(val1, 1);
250 assertEquals(val2, (isServerWithStable ? 1 : 2));
252 c.v = new byte[1][1]; c.v[0][0] = 3; byte val3 = get();
253 assertEquals(val3, (isStableEnabled ? (isServerWithStable ? 1 : 2)
254 : 3));
256 c.v[0] = new byte[1]; c.v[0][0] = 4; byte val4 = get();
257 assertEquals(val4, (isStableEnabled ? (isServerWithStable ? 1 : 2)
258 : 4));
259 }
261 {
262 c.v = new byte[1][1]; byte[] val1 = get1();
263 c.v[0] = new byte[1]; byte[] val2 = get1();
264 assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
265 }
267 {
268 c.v = new byte[1][1]; byte[][] val1 = get2();
269 c.v = new byte[1][1]; byte[][] val2 = get2();
270 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
271 }
272 }
273 }
275 /* ==================================================== */
277 static class ByteArrayDim3 {
278 public @Stable byte[][][] v;
280 public static final ByteArrayDim3 c = new ByteArrayDim3();
281 public static byte get() { return c.v[0][0][0]; }
282 public static byte[] get1() { return c.v[0][0]; }
283 public static byte[][] get2() { return c.v[0]; }
284 public static byte[][][] get3() { return c.v; }
285 public static void test() throws Exception {
286 {
287 c.v = new byte[1][1][1]; c.v[0][0][0] = 1; byte val1 = get();
288 c.v[0][0][0] = 2; byte val2 = get();
289 assertEquals(val1, 1);
290 assertEquals(val2, (isServerWithStable ? 1 : 2));
292 c.v = new byte[1][1][1]; c.v[0][0][0] = 3; byte val3 = get();
293 assertEquals(val3, (isStableEnabled ? (isServerWithStable ? 1 : 2)
294 : 3));
296 c.v[0] = new byte[1][1]; c.v[0][0][0] = 4; byte val4 = get();
297 assertEquals(val4, (isStableEnabled ? (isServerWithStable ? 1 : 2)
298 : 4));
300 c.v[0][0] = new byte[1]; c.v[0][0][0] = 5; byte val5 = get();
301 assertEquals(val5, (isStableEnabled ? (isServerWithStable ? 1 : 2)
302 : 5));
303 }
305 {
306 c.v = new byte[1][1][1]; byte[] val1 = get1();
307 c.v[0][0] = new byte[1]; byte[] val2 = get1();
308 assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
309 }
311 {
312 c.v = new byte[1][1][1]; byte[][] val1 = get2();
313 c.v[0] = new byte[1][1]; byte[][] val2 = get2();
314 assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
315 }
317 {
318 c.v = new byte[1][1][1]; byte[][][] val1 = get3();
319 c.v = new byte[1][1][1]; byte[][][] val2 = get3();
320 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
321 }
322 }
323 }
325 /* ==================================================== */
327 static class ByteArrayDim4 {
328 public @Stable byte[][][][] v;
330 public static final ByteArrayDim4 c = new ByteArrayDim4();
331 public static byte get() { return c.v[0][0][0][0]; }
332 public static byte[] get1() { return c.v[0][0][0]; }
333 public static byte[][] get2() { return c.v[0][0]; }
334 public static byte[][][] get3() { return c.v[0]; }
335 public static byte[][][][] get4() { return c.v; }
336 public static void test() throws Exception {
337 {
338 c.v = new byte[1][1][1][1]; c.v[0][0][0][0] = 1; byte val1 = get();
339 c.v[0][0][0][0] = 2; byte val2 = get();
340 assertEquals(val1, 1);
341 assertEquals(val2, (isServerWithStable ? 1 : 2));
343 c.v = new byte[1][1][1][1]; c.v[0][0][0][0] = 3; byte val3 = get();
344 assertEquals(val3, (isStableEnabled ? (isServerWithStable ? 1 : 2)
345 : 3));
347 c.v[0] = new byte[1][1][1]; c.v[0][0][0][0] = 4; byte val4 = get();
348 assertEquals(val4, (isStableEnabled ? (isServerWithStable ? 1 : 2)
349 : 4));
351 c.v[0][0] = new byte[1][1]; c.v[0][0][0][0] = 5; byte val5 = get();
352 assertEquals(val5, (isStableEnabled ? (isServerWithStable ? 1 : 2)
353 : 5));
355 c.v[0][0][0] = new byte[1]; c.v[0][0][0][0] = 6; byte val6 = get();
356 assertEquals(val6, (isStableEnabled ? (isServerWithStable ? 1 : 2)
357 : 6));
358 }
360 {
361 c.v = new byte[1][1][1][1]; byte[] val1 = get1();
362 c.v[0][0][0] = new byte[1]; byte[] val2 = get1();
363 assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
364 }
366 {
367 c.v = new byte[1][1][1][1]; byte[][] val1 = get2();
368 c.v[0][0] = new byte[1][1]; byte[][] val2 = get2();
369 assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
370 }
372 {
373 c.v = new byte[1][1][1][1]; byte[][][] val1 = get3();
374 c.v[0] = new byte[1][1][1]; byte[][][] val2 = get3();
375 assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
376 }
378 {
379 c.v = new byte[1][1][1][1]; byte[][][][] val1 = get4();
380 c.v = new byte[1][1][1][1]; byte[][][][] val2 = get4();
381 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
382 }
384 }
385 }
387 /* ==================================================== */
388 // Dynamic Dim is higher than static
390 static class ObjectArrayLowerDim0 {
391 public @Stable Object v;
393 public static final ObjectArrayLowerDim0 c = new ObjectArrayLowerDim0();
394 public static byte get() { return ((byte[])c.v)[0]; }
395 public static byte[] get1() { return (byte[])c.v; }
397 public static void test() throws Exception {
398 {
399 c.v = new byte[1]; ((byte[])c.v)[0] = 1; byte val1 = get();
400 ((byte[])c.v)[0] = 2; byte val2 = get();
402 assertEquals(val1, 1);
403 assertEquals(val2, 2);
404 }
406 {
407 c.v = new byte[1]; byte[] val1 = get1();
408 c.v = new byte[1]; byte[] val2 = get1();
409 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
410 }
411 }
412 }
414 /* ==================================================== */
416 static class ObjectArrayLowerDim1 {
417 public @Stable Object[] v;
419 public static final ObjectArrayLowerDim1 c = new ObjectArrayLowerDim1();
420 public static byte get() { return ((byte[][])c.v)[0][0]; }
421 public static byte[] get1() { return (byte[])(c.v[0]); }
422 public static Object[] get2() { return c.v; }
424 public static void test() throws Exception {
425 {
426 c.v = new byte[1][1]; ((byte[][])c.v)[0][0] = 1; byte val1 = get();
427 ((byte[][])c.v)[0][0] = 2; byte val2 = get();
429 assertEquals(val1, 1);
430 assertEquals(val2, 2);
431 }
433 {
434 c.v = new byte[1][1]; c.v[0] = new byte[0]; byte[] val1 = get1();
435 c.v[0] = new byte[0]; byte[] val2 = get1();
437 assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
438 }
440 {
441 c.v = new byte[0][0]; Object[] val1 = get2();
442 c.v = new byte[0][0]; Object[] val2 = get2();
444 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
445 }
446 }
447 }
449 /* ==================================================== */
451 static class ObjectArrayLowerDim2 {
452 public @Stable Object[][] v;
454 public static final ObjectArrayLowerDim2 c = new ObjectArrayLowerDim2();
455 public static byte get() { return ((byte[][][])c.v)[0][0][0]; }
456 public static byte[] get1() { return (byte[])(c.v[0][0]); }
457 public static byte[][] get2() { return (byte[][])(c.v[0]); }
458 public static Object[][] get3() { return c.v; }
460 public static void test() throws Exception {
461 {
462 c.v = new byte[1][1][1]; ((byte[][][])c.v)[0][0][0] = 1; byte val1 = get();
463 ((byte[][][])c.v)[0][0][0] = 2; byte val2 = get();
465 assertEquals(val1, 1);
466 assertEquals(val2, 2);
467 }
469 {
470 c.v = new byte[1][1][1]; c.v[0][0] = new byte[0]; byte[] val1 = get1();
471 c.v[0][0] = new byte[0]; byte[] val2 = get1();
473 assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
474 }
476 {
477 c.v = new byte[1][1][1]; c.v[0] = new byte[0][0]; byte[][] val1 = get2();
478 c.v[0] = new byte[0][0]; byte[][] val2 = get2();
480 assertTrue((isServerWithStable ? (val1 == val2) : (val1 != val2)));
481 }
483 {
484 c.v = new byte[0][0][0]; Object[][] val1 = get3();
485 c.v = new byte[0][0][0]; Object[][] val2 = get3();
487 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
488 }
489 }
490 }
492 /* ==================================================== */
494 static class NestedStableField {
495 static class A {
496 public @Stable byte a;
498 }
499 public @Stable A v;
501 public static final NestedStableField c = new NestedStableField();
502 public static A get() { return c.v; }
503 public static byte get1() { return get().a; }
505 public static void test() throws Exception {
506 {
507 c.v = new A(); c.v.a = 1; A val1 = get();
508 c.v.a = 2; A val2 = get();
510 assertEquals(val1.a, 2);
511 assertEquals(val2.a, 2);
512 }
514 {
515 c.v = new A(); c.v.a = 1; byte val1 = get1();
516 c.v.a = 2; byte val2 = get1();
517 c.v = new A(); c.v.a = 3; byte val3 = get1();
519 assertEquals(val1, 1);
520 assertEquals(val2, (isStableEnabled ? 1 : 2));
521 assertEquals(val3, (isStableEnabled ? 1 : 3));
522 }
523 }
524 }
526 /* ==================================================== */
528 static class NestedStableField1 {
529 static class A {
530 public @Stable byte a;
531 public @Stable A next;
532 }
533 public @Stable A v;
535 public static final NestedStableField1 c = new NestedStableField1();
536 public static A get() { return c.v.next.next.next.next.next.next.next; }
537 public static byte get1() { return get().a; }
539 public static void test() throws Exception {
540 {
541 c.v = new A(); c.v.next = new A(); c.v.next.next = c.v;
542 c.v.a = 1; c.v.next.a = 1; A val1 = get();
543 c.v.a = 2; c.v.next.a = 2; A val2 = get();
545 assertEquals(val1.a, 2);
546 assertEquals(val2.a, 2);
547 }
549 {
550 c.v = new A(); c.v.next = c.v;
551 c.v.a = 1; byte val1 = get1();
552 c.v.a = 2; byte val2 = get1();
553 c.v = new A(); c.v.next = c.v;
554 c.v.a = 3; byte val3 = get1();
556 assertEquals(val1, 1);
557 assertEquals(val2, (isStableEnabled ? 1 : 2));
558 assertEquals(val3, (isStableEnabled ? 1 : 3));
559 }
560 }
561 }
562 /* ==================================================== */
564 static class NestedStableField2 {
565 static class A {
566 public @Stable byte a;
567 public @Stable A left;
568 public A right;
569 }
571 public @Stable A v;
573 public static final NestedStableField2 c = new NestedStableField2();
574 public static byte get() { return c.v.left.left.left.a; }
575 public static byte get1() { return c.v.left.left.right.left.a; }
577 public static void test() throws Exception {
578 {
579 c.v = new A(); c.v.left = c.v.right = c.v;
580 c.v.a = 1; byte val1 = get(); byte val2 = get1();
581 c.v.a = 2; byte val3 = get(); byte val4 = get1();
583 assertEquals(val1, 1);
584 assertEquals(val3, (isStableEnabled ? 1 : 2));
586 assertEquals(val2, 1);
587 assertEquals(val4, 2);
588 }
589 }
590 }
592 /* ==================================================== */
594 static class NestedStableField3 {
595 static class A {
596 public @Stable byte a;
597 public @Stable A[] left;
598 public A[] right;
599 }
601 public @Stable A[] v;
603 public static final NestedStableField3 c = new NestedStableField3();
604 public static byte get() { return c.v[0].left[1].left[0].left[1].a; }
605 public static byte get1() { return c.v[1].left[0].left[1].right[0].left[1].a; }
607 public static void test() throws Exception {
608 {
609 A elem = new A();
610 c.v = new A[] { elem, elem }; c.v[0].left = c.v[0].right = c.v;
611 elem.a = 1; byte val1 = get(); byte val2 = get1();
612 elem.a = 2; byte val3 = get(); byte val4 = get1();
614 assertEquals(val1, 1);
615 assertEquals(val3, (isServerWithStable ? 1 : 2));
617 assertEquals(val2, 1);
618 assertEquals(val4, 2);
619 }
620 }
621 }
623 /* ==================================================== */
624 // Auxiliary methods
625 static void assertEquals(int i, int j) { if (i != j) throw new AssertionError(i + " != " + j); }
626 static void assertTrue(boolean b) { if (!b) throw new AssertionError(); }
628 static boolean failed = false;
630 public static void run(Class<?> test) {
631 Throwable ex = null;
632 System.out.print(test.getName()+": ");
633 try {
634 test.getMethod("test").invoke(null);
635 } catch (InvocationTargetException e) {
636 ex = e.getCause();
637 } catch (Throwable e) {
638 ex = e;
639 } finally {
640 if (ex == null) {
641 System.out.println("PASSED");
642 } else {
643 failed = true;
644 System.out.println("FAILED");
645 ex.printStackTrace(System.out);
646 }
647 }
648 }
649 }
