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Java example source code file (RepeatingTypeAnnotations.java)

This example Java source code file (RepeatingTypeAnnotations.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

cast, field, local_variable, method_formal_parameter, method_return, object, repeatingtypeannotations, runtimeinvisibletypeannotations, runtimevisibletypeannotations, string, testcase, util

The RepeatingTypeAnnotations.java Java example source code

/*
 * Copyright (c) 2013, 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.
 */

/*
 * @test
 * @bug 8005220
 * @summary javap must display repeating annotations
 */
import java.io.*;
import java.util.*;

/**
 * This class extends the abstract {@link Tester} test-driver, and
 * encapusulates a number of test-case classes (i.e. classes extending
 * this class and annotated with {@code TestCase}).
 * <p>
 * By default (no argument), this test runs all test-cases, except
 * if annotated with {@code ignore}.
 * <p>
 * Individual test cases can be executed using a run action.
 * <p>
 * Example: @run main RepeatingTypeAnnotations RepeatingTypeAnnotations$TC4
 * <p>
 * Note: when specific test-cases are run, additional debug output is
 * produced to help debugging. Test annotated with {@code ignore}
 * can be executed explicitly.
 */
public class RepeatingTypeAnnotations extends Tester {

    /**
     * Main method instantiates test and run test-cases.
     */
    public static void main(String... args) throws Exception {
        Tester tester = new RepeatingTypeAnnotations();
        tester.run(args);
    }

    /**
     * Testcases are classes extending {@code RepeatingTypeAnnotations},
     * and calling {@link setSrc}, followed by one or more invocations
     * of {@link verify} in the body of the constructor.
     */
    public RepeatingTypeAnnotations() {
        setSrc(new TestSource(template));
    }

    /**
     * Common template for test cases. The line TESTCASE is
     * replaced with the specific lines of individual tests.
     */
    private static final String[] template = {
        "import java.lang.annotation.*;",
        "class Test {",
        "    @Repeatable(As.class)",
        "    @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})",
        "    @Retention(RetentionPolicy.CLASS)",
        "    @interface A {",
        "        Class f() default int.class;",
        "    }",

        "    @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})",
        "    @Retention(RetentionPolicy.CLASS)",
        "    @interface As { A[] value(); }",

        "    @Repeatable(Bs.class)",
        "    @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})",
        "    @Retention(RetentionPolicy.CLASS)",
        "    @interface B {",
        "        Class f() default int.class;",
        "    }",

        "    @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})",
        "    @Retention(RetentionPolicy.CLASS)",
        "    @interface Bs { B[] value(); }",

        "    @Repeatable(Cs.class)",
        "    @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})",
        "    @Retention(RetentionPolicy.RUNTIME)",
        "    @interface C {",
        "        Class f() default int.class;",
        "    }",

        "    @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})",
        "    @Retention(RetentionPolicy.RUNTIME)",
        "    @interface Cs { C[] value(); }",
        "TESTCASE",
        "}"
    };

    /*
     * The test cases covers annotation in the following locations:
     * - static and non-static fields
     * - local variables
     * - constructor and method return type and parameter types
     * - casts in class and method contexts.
     * For the above locations the test-cases covers:
     * - single annotation type
     * - two annotation types with same retention
     * - two annotation types with different retention
     * - three annotation types, two of same retention, one different.
     */

    @TestCase
    public static class TC1 extends RepeatingTypeAnnotations {
        public TC1() {
            setSrc(" /* TC1 */ ",
                   "    static String so = \"hello world\";",
                   "    public @A @A @A Object o = (@A @A @A String) Test.so;");
            verify("RuntimeInvisibleTypeAnnotations",
                   "0: #25(#26=[@#27(),@#27(),@#27()]): FIELD",
                   "0: #25(#26=[@#27(),@#27(),@#27()]): CAST, offset=5, type_index=0");
        }
    }

    @TestCase
    public static class TC2 extends RepeatingTypeAnnotations {
        public TC2() {
            setSrc(" /* TC2 */ ",
                   "    static String so = \"hello world\";",
                   "    public @A @B @A Object o = (@B @A @B String) Test.so;");
            verify("RuntimeInvisibleTypeAnnotations",
                   "0: #25(#26=[@#27(),@#27()]): FIELD",
                   "1: #28(): FIELD",
                   "0: #36(#26=[@#28(),@#28()]): CAST, offset=5, type_index=0",
                   "1: #27(): CAST, offset=5, type_index=0");
        }
    }

    @TestCase
    public static class TC3 extends RepeatingTypeAnnotations {
        public TC3() {
            setSrc(" /* TC3 */ ",
                   "    static String so = \"hello world\";",
                   "    public @A @A @C Object o = (@B @C @B String) Test.so;");
            verify("RuntimeVisibleTypeAnnotations",
                   "RuntimeInvisibleTypeAnnotations",
                   "0: #25(): FIELD",
                   "0: #27(#28=[@#29(),@#29()]): FIELD",
                   "0: #25(): CAST, offset=5, type_index=0",
                   "0: #37(#28=[@#38(),@#38()]): CAST, offset=5, type_index=0");
        }
    }

    @TestCase
    public static class TC4 extends RepeatingTypeAnnotations {
        public TC4() {
            setSrc(" /* TC4 */ ",
                   "    static String so = \"hello world\";",
                   "    public @A @B @C Object o = (@C @B @A String) Test.so;");
            verify("RuntimeInvisibleTypeAnnotations",
                   "RuntimeVisibleTypeAnnotations",
                   "0: #25(): FIELD",
                   "0: #27(): FIELD",
                   "1: #28(): FIELD",
                   "0: #25(): CAST, offset=5, type_index=0",
                   "0: #28(): CAST, offset=5, type_index=0",
                   "1: #27(): CAST, offset=5, type_index=0");
        }
    }

    @TestCase
    public static class TC5 extends RepeatingTypeAnnotations {
        public TC5() {
            setSrc(" /* TC5 */ ",
                   "    static String so = \"hello world\";",
                   "    public static @A @A @A Object o = (@B @B @B String) Test.so;");
            verify("RuntimeInvisibleTypeAnnotations",
                   "0: #25(#26=[@#27(),@#27(),@#27()]): FIELD",
                   "0: #36(#26=[@#37(),@#37(),@#37()]): CAST, offset=5, type_index=0");
        }
    }

    @TestCase
    public static class TC6 extends RepeatingTypeAnnotations {
        public TC6() {
            setSrc(" /* TC6 */ ",
                   "    static String so = \"hello world\";",
                   "    public static @A @B @A Object o = (@B @A @B String) Test.so;");
            verify("RuntimeInvisibleTypeAnnotations",
                   "0: #25(#26=[@#27(),@#27()]): FIELD",
                   "1: #28(): FIELD",
                   "0: #37(#26=[@#28(),@#28()]): CAST, offset=5, type_index=0",
                   "1: #27(): CAST, offset=5, type_index=0");
        }
    }

    @TestCase
    public static class TC7 extends RepeatingTypeAnnotations {
        public TC7() {
            setSrc(" /* TC7 */ ",
                   "    static String so = \"hello world\";",
                   "    public static @A @A @C Object o = (@B @C @B String) Test.so;");
            verify("RuntimeVisibleTypeAnnotations",
                   "RuntimeInvisibleTypeAnnotations",
                   "0: #25(): FIELD",
                   "0: #27(#28=[@#29(),@#29()]): FIELD",
                   "0: #25(): CAST, offset=5, type_index=0",
                   "0: #38(#28=[@#39(),@#39()]): CAST, offset=5, type_index=0");
        }
    }

    @TestCase
    public static class TC8 extends RepeatingTypeAnnotations {
        public TC8() {
            setSrc(" /* TC8 */ ",
                   "    static String so = \"hello world\";",
                   "    public static @A @B @C Object o = (@C @B @A String) Test.so;");

            verify("RuntimeVisibleTypeAnnotations",
                   "RuntimeInvisibleTypeAnnotations",
                   "0: #25(): FIELD",
                   "0: #27(): FIELD",
                   "1: #28(): FIELD",
                   "0: #25(): CAST, offset=5, type_index=0",
                   "0: #28(): CAST, offset=5, type_index=0",
                   "1: #27(): CAST, offset=5, type_index=0");
        }
    }

    @TestCase
    public static class TC9 extends RepeatingTypeAnnotations {
        public TC9() {
            setSrc(" /* TC9 */ ",
                   "    public Test(@A @A @A Object o, @A int i, long l) {",
                   "        @A @A @A String ls = (@B @B @B String) o;",
                   "    }");
            verify("RuntimeInvisibleTypeAnnotations",
                   "0: #34(#35=[@#36(),@#36(),@#36()]): CAST, offset=4, type_index=0",
                   "1: #37(#35=[@#38(),@#38(),@#38()]): LOCAL_VARIABLE, {start_pc=10, length=1, index=5}",
                   "RuntimeInvisibleTypeAnnotations",
                   "0: #37(#35=[@#38(),@#38(),@#38()]): METHOD_FORMAL_PARAMETER, param_index=0",
                   "1: #38(): METHOD_FORMAL_PARAMETER, param_index=1");
        }
    }

    @TestCase
    public static class TC10 extends RepeatingTypeAnnotations {
        public TC10() {
            setSrc(" /* TC10 */ ",
                   "    public Test(@A @A @B Object o, @A @B int i, long l) {",
                   "        @A @A @B String ls = (@B @A @B String) o;",
                   "    }");
            verify("RuntimeInvisibleTypeAnnotations",
                   "0: #34(#35=[@#36(),@#36()]): CAST, offset=4, type_index=0",
                   "1: #37(): CAST, offset=4, type_index=0",
                   "2: #38(#35=[@#37(),@#37()]): LOCAL_VARIABLE, {start_pc=10, length=1, index=5}",
                   "3: #36(): LOCAL_VARIABLE, {start_pc=10, length=1, index=5}",
                   "RuntimeInvisibleTypeAnnotations",
                   "0: #38(#35=[@#37(),@#37()]): METHOD_FORMAL_PARAMETER, param_index=0",
                   "1: #36(): METHOD_FORMAL_PARAMETER, param_index=0",
                   "2: #37(): METHOD_FORMAL_PARAMETER, param_index=1",
                   "3: #36(): METHOD_FORMAL_PARAMETER, param_index=1");
        }
    }

    @TestCase
    public static class TC11 extends RepeatingTypeAnnotations {
        public TC11() {
            setSrc(" /* TC11 */ ",
                   "    public Test(@C @C @A Object o, @A @B int i, long l) {",
                   "        @C @C @A String ls = (@A @A @C String) o;",
                   "    }");
            verify("RuntimeVisibleTypeAnnotations",
                   "RuntimeInvisibleTypeAnnotations",
                   "0: #34(): CAST, offset=4, type_index=0",
                   "1: #35(#36=[@#34(),@#34()]): LOCAL_VARIABLE, {start_pc=10, length=1, index=5}",
                   "0: #38(#36=[@#39(),@#39()]): CAST, offset=4, type_index=0",
                   "1: #39(): LOCAL_VARIABLE, {start_pc=10, length=1, index=5}",
                   "0: #35(#36=[@#34(),@#34()]): METHOD_FORMAL_PARAMETER, param_index=0",
                   "0: #39(): METHOD_FORMAL_PARAMETER, param_index=0",
                   "1: #39(): METHOD_FORMAL_PARAMETER, param_index=1",
                   "2: #40(): METHOD_FORMAL_PARAMETER, param_index=1");
        }
    }

    @TestCase
    public static class TC12 extends RepeatingTypeAnnotations {
        public TC12() {
            setSrc(" /* TC12 */ ",
                   "    public Test(@A @B @C Object o, @A @C int i, long l) {",
                   "        @A @B @C String ls = (@C @A @B String) o;",
                   "    }");
            verify("RuntimeVisibleTypeAnnotations",
                   "0: #34(): CAST, offset=4, type_index=0",
                   "1: #34(): LOCAL_VARIABLE, {start_pc=10, length=1, index=5}",
                   "RuntimeInvisibleTypeAnnotations",
                   "0: #36(): CAST, offset=4, type_index=0",
                   "1: #37(): CAST, offset=4, type_index=0",
                   "2: #36(): LOCAL_VARIABLE, {start_pc=10, length=1, index=5}",
                   "3: #37(): LOCAL_VARIABLE, {start_pc=10, length=1, index=5}",
                   "0: #34(): METHOD_FORMAL_PARAMETER, param_index=0",
                   "1: #34(): METHOD_FORMAL_PARAMETER, param_index=1",
                   "0: #36(): METHOD_FORMAL_PARAMETER, param_index=0",
                   "1: #37(): METHOD_FORMAL_PARAMETER, param_index=0",
                   "2: #36(): METHOD_FORMAL_PARAMETER, param_index=1");
        }
    }

    @TestCase
    public static class TC13 extends RepeatingTypeAnnotations {
        public TC13() {
            setSrc(" /* TC13 */ ",
                   "    public @A @A @A String foo(@A @A @A Object o, @A int i, long l) {",
                   "        @A @A @A String ls = (@B @B @B String) o;",
                   "        return (@A @A @A String) o;",
                   "    }");
            verify("RuntimeInvisibleTypeAnnotations",
                   "0: #36(#37=[@#38(),@#38(),@#38()]): CAST, offset=0, type_index=0",
                   "1: #39(#37=[@#40(),@#40(),@#40()]): CAST, offset=6, type_index=0",
                   "2: #39(#37=[@#40(),@#40(),@#40()]): LOCAL_VARIABLE, {start_pc=6, length=5, index=5}",
                    "RuntimeInvisibleTypeAnnotations",
                   "0: #39(#37=[@#40(),@#40(),@#40()]): METHOD_RETURN",
                   "1: #39(#37=[@#40(),@#40(),@#40()]): METHOD_FORMAL_PARAMETER, param_index=0",
                   "2: #40(): METHOD_FORMAL_PARAMETER, param_index=1");
        }
    }

    @TestCase
    public static class TC14 extends RepeatingTypeAnnotations {
        public TC14() {
            setSrc(" /* TC14 */ ",
                   "    public @A @B @B String foo(@A @A @B Object o, @A @B int i, long l) {",
                   "        @A @A @B String ls = (@B @A @B String) o;",
                   "        return (@A @B @B String) o;",
                   "    }");
           verify(
                    "RuntimeInvisibleTypeAnnotations:",
                    "0: #36(#37=[@#38(),@#38()]): CAST, offset=0, type_index=0",
                    "1: #39(): CAST, offset=0, type_index=0",
                  "2: #39(): CAST, offset=6, type_index=0",
                  "3: #36(#37=[@#38(),@#38()]): CAST, offset=6, type_index=0",
                  "4: #40(#37=[@#39(),@#39()]): LOCAL_VARIABLE, {start_pc=6, length=5, index=5}",
                  "5: #38(): LOCAL_VARIABLE, {start_pc=6, length=5, index=5}",
                    "RuntimeInvisibleTypeAnnotations:",
                  "0: #39(): METHOD_RETURN",
                  "1: #36(#37=[@#38(),@#38()]): METHOD_RETURN",
                  "2: #40(#37=[@#39(),@#39()]): METHOD_FORMAL_PARAMETER, param_index=0",
                  "3: #38(): METHOD_FORMAL_PARAMETER, param_index=0",
                  "4: #39(): METHOD_FORMAL_PARAMETER, param_index=1",
                    "5: #38(): METHOD_FORMAL_PARAMETER, param_index=1"
                 );
        }
    }

    @TestCase
    public static class TC15 extends RepeatingTypeAnnotations {
        public TC15() {
            setSrc(" /* TC15 */ ",
                   "    public @A @A @C String foo(@C @C @A Object o, @A @B int i, long l) {",
                   "        @C @C @A String ls = (@A @A @C String) o;",
                   "        return (@C @B @B String) o;",
                   "    }");
            verify(
                    "RuntimeVisibleTypeAnnotations:",
                    "0: #36(): CAST, offset=0, type_index=0",
                   "1: #36(): CAST, offset=6, type_index=0",
                   "2: #37(#38=[@#36(),@#36()]): LOCAL_VARIABLE, {start_pc=6, length=5, index=5}",
                    "RuntimeInvisibleTypeAnnotations:",
                    "0: #40(#38=[@#41(),@#41()]): CAST, offset=0, type_index=0",
                   "1: #42(#38=[@#43(),@#43()]): CAST, offset=6, type_index=0",
                   "2: #41(): LOCAL_VARIABLE, {start_pc=6, length=5, index=5}",
                    "RuntimeVisibleTypeAnnotations:",
                   "0: #36(): METHOD_RETURN",
                   "1: #37(#38=[@#36(),@#36()]): METHOD_FORMAL_PARAMETER, param_index=0",
                    "RuntimeInvisibleTypeAnnotations:",
                   "0: #40(#38=[@#41(),@#41()]): METHOD_RETURN",
                   "1: #41(): METHOD_FORMAL_PARAMETER, param_index=0",
                   "2: #41(): METHOD_FORMAL_PARAMETER, param_index=1",
                    "3: #43(): METHOD_FORMAL_PARAMETER, param_index=1"
                    );
        }
    }

    @TestCase
    public static class TC16 extends RepeatingTypeAnnotations {
        public TC16() {
            setSrc(" /* TC16 */ ",
                   "    public @A @B @C String foo(@A @B @C Object o, @A @C int i, long l) {",
                   "        @A @B @C String ls = (@C @A @B String) o;",
                   "        return (@B @A @C String) o;",
                   "    }");
            verify(
                    "RuntimeVisibleTypeAnnotations:",
                    "0: #36(): CAST, offset=0, type_index=0",
                   "1: #36(): CAST, offset=6, type_index=0",
                   "2: #36(): LOCAL_VARIABLE, {start_pc=6, length=5, index=5}",
                    "RuntimeInvisibleTypeAnnotations:",
                    "0: #38(): CAST, offset=0, type_index=0",
                    "1: #39(): CAST, offset=0, type_index=0",
                   "2: #39(): CAST, offset=6, type_index=0",
                   "3: #38(): CAST, offset=6, type_index=0",
                   "4: #38(): LOCAL_VARIABLE, {start_pc=6, length=5, index=5}",
                   "5: #39(): LOCAL_VARIABLE, {start_pc=6, length=5, index=5}",
                    "RuntimeVisibleTypeAnnotations:",
                   "0: #36(): METHOD_RETURN",
                   "1: #36(): METHOD_FORMAL_PARAMETER, param_index=0",
                   "2: #36(): METHOD_FORMAL_PARAMETER, param_index=1",
                    "RuntimeInvisibleTypeAnnotations:",
                   "0: #38(): METHOD_RETURN",
                   "1: #39(): METHOD_RETURN",
                   "2: #38(): METHOD_FORMAL_PARAMETER, param_index=0",
                   "3: #39(): METHOD_FORMAL_PARAMETER, param_index=0",
                    "4: #38(): METHOD_FORMAL_PARAMETER, param_index=1"
                  );
        }
    }
}

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