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BAEL-4220 | A Guide to IllegalAccessError and when it happens (eugenp#10798)
* BAEL-4220 | A Guide to IllegalAccessError and when it happens * BAEL-4220 | A Guide to IllegalAccessError and when it happens | fix tests * BAEL-4220 | A Guide to IllegalAccessError and when it happens | fix tests * BAEL-4220 | A Guide to IllegalAccessError and when it happens | BDD test names
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‎core-java-modules/core-java-exceptions-3/src/main/java/com/baeldung/exceptions/illegalaccesserror/Class1.java‎

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package com.baeldung.exceptions.illegalaccesserror;
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public class Class1 {
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public void bar() {
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System.out.println("SUCCESS");
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}
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}

‎core-java-modules/core-java-exceptions-3/src/main/java/com/baeldung/exceptions/illegalaccesserror/Class2.java‎

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package com.baeldung.exceptions.illegalaccesserror;
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public class Class2 {
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public void foo() {
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Class1 c1 = new Class1();
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c1.bar();
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}
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}
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‎core-java-modules/core-java-exceptions-3/src/main/java/com/baeldung/exceptions/illegalaccesserror/IllegalAccessErrorExample.java‎

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package com.baeldung.exceptions.illegalaccesserror;
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public class IllegalAccessErrorExample {
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interface Baeldung {
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public default void foobar() {
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System.out.println("This is a default method.");
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}
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}
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class Super {
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private void foobar() {
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System.out.println("SuperClass method foobar");
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}
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}
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class MySubClass extends Super implements Baeldung {
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}
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}

‎core-java-modules/core-java-exceptions-3/src/main/java/com/baeldung/exceptions/illegalaccesserror/IllegalAccessErrorSolved.java‎

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package com.baeldung.exceptions.illegalaccesserror;
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public class IllegalAccessErrorSolved {
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interface BaeldungSolved {
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public default void foobar() {
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System.out.println("This is a default method.");
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}
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}
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class SuperSolved {
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public void foobar() {
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System.out.println("SuperClass method foobar");
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}
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}
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class MySubClassSolved extends SuperSolved implements BaeldungSolved {
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}
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}

‎core-java-modules/core-java-exceptions-3/src/test/java/com/baeldung/exceptions/illegalaccesserror/IllegalAccessErrorExampleUnitTest.java‎

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package com.baeldung.exceptions.illegalaccesserror;
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import org.junit.jupiter.api.Assertions;
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import org.junit.jupiter.api.Test;
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public class IllegalAccessErrorExampleUnitTest {
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@Test()
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public void givenInterfaceDefaultMethOverriddenPrivateAccess_whenInvoked_thenIllegalAccessError() {
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Assertions.assertThrows(IllegalAccessError.class, () -> {
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new IllegalAccessErrorExample().new MySubClass().foobar();
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});
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}
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@Test()
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public void givenClass1Class2_whenSameClassDefintion_thenNoIllegalAccessError() {
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Assertions.assertDoesNotThrow(() -> {
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new Class2().foo();
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});
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}
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}

‎core-java-modules/core-java-exceptions-3/src/test/java/com/baeldung/exceptions/illegalaccesserror/IllegalAccessErrorSolvedUnitTest.java‎

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package com.baeldung.exceptions.illegalaccesserror;
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import org.junit.jupiter.api.Assertions;
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import org.junit.jupiter.api.Test;
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public class IllegalAccessErrorSolvedUnitTest {
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@Test()
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public void givenInterfaceDefaultMethOverriddenNonPrivateAccess_whenInvoked_thenNoIllegalAccessError() {
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Assertions.assertDoesNotThrow(() -> {
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new IllegalAccessErrorSolved().new MySubClassSolved().foobar();
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});
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}
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}

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