diff --git a/core-java-modules/core-java-reflection-private-constructor/README.md b/core-java-modules/core-java-reflection-private-constructor/README.md new file mode 100644 index 0000000000..a3c9d00b0a --- /dev/null +++ b/core-java-modules/core-java-reflection-private-constructor/README.md @@ -0,0 +1,10 @@ +### Relevant Articles: + +- [Reading the Value of ‘private’ Fields from a Different Class in Java](https://www.baeldung.com/java-reflection-read-private-field-value) +- [Set Field Value With Reflection](https://www.baeldung.com/java-set-private-field-value) +- [Checking If a Method is Static Using Reflection in Java](https://www.baeldung.com/java-check-method-is-static) +- [Checking if a Java Class is ‘abstract’ Using Reflection](https://www.baeldung.com/java-reflection-is-class-abstract) +- [Invoking a Private Method in Java](https://www.baeldung.com/java-call-private-method) +- [Finding All Classes in a Java Package](https://www.baeldung.com/java-find-all-classes-in-package) +- [Invoke a Static Method Using Java Reflection API](https://www.baeldung.com/java-invoke-static-method-reflection) +- [What Is the JDK com.sun.proxy.$Proxy Class?](https://www.baeldung.com/jdk-com-sun-proxy) diff --git a/core-java-modules/core-java-reflection-private-constructor/pom.xml b/core-java-modules/core-java-reflection-private-constructor/pom.xml new file mode 100644 index 0000000000..b53aa2c61b --- /dev/null +++ b/core-java-modules/core-java-reflection-private-constructor/pom.xml @@ -0,0 +1,60 @@ + + + 4.0.0 + core-java-reflection-private-constructor + 0.1.0-SNAPSHOT + core-java-reflection-private-constructor + jar + + + com.baeldung.core-java-modules + core-java-modules + 0.0.1-SNAPSHOT + + + + + org.springframework + spring-test + ${spring.version} + test + + + org.reflections + reflections + ${reflections.version} + + + + + core-java-reflection-private-constructor + + + src/main/resources + true + + + + + org.apache.maven.plugins + maven-compiler-plugin + ${maven-compiler-plugin.version} + + ${source.version} + ${target.version} + -parameters + + + + + + + 0.9.12 + 1.8 + 1.8 + 5.3.4 + + + \ No newline at end of file diff --git a/core-java-modules/core-java-reflection-private-constructor/src/main/java/com/baeldung/reflection/PrivateConstructorClass.java b/core-java-modules/core-java-reflection-private-constructor/src/main/java/com/baeldung/reflection/PrivateConstructorClass.java new file mode 100644 index 0000000000..24e7d435c7 --- /dev/null +++ b/core-java-modules/core-java-reflection-private-constructor/src/main/java/com/baeldung/reflection/PrivateConstructorClass.java @@ -0,0 +1,8 @@ +package com.baeldung.reflection; + +public class PrivateConstructorClass { + + private PrivateConstructorClass() { + System.out.println("Used the private constructor!"); + } +} \ No newline at end of file diff --git a/core-java-modules/core-java-reflection-private-constructor/src/test/java/com/baeldung/reflection/PrivateConstructorUnitTest.java b/core-java-modules/core-java-reflection-private-constructor/src/test/java/com/baeldung/reflection/PrivateConstructorUnitTest.java new file mode 100644 index 0000000000..cd1f48d720 --- /dev/null +++ b/core-java-modules/core-java-reflection-private-constructor/src/test/java/com/baeldung/reflection/PrivateConstructorUnitTest.java @@ -0,0 +1,17 @@ +package com.baeldung.reflection; + +import java.lang.reflect.Constructor; + +import org.junit.jupiter.api.Assertions; +import org.junit.jupiter.api.Test; + +public class PrivateConstructorUnitTest { + + @Test + public void whenConstructorIsPrivate_thenInstanceSuccess() throws Exception { + Constructor pcc = PrivateConstructorClass.class.getDeclaredConstructor(); + pcc.setAccessible(true); + PrivateConstructorClass privateConstructorInstance = pcc.newInstance(); + Assertions.assertTrue(privateConstructorInstance instanceof PrivateConstructorClass); + } +} \ No newline at end of file