BAEL 4157 Move examples to new core-java-lang-3 module (#9678)

This commit is contained in:
Amy DeGregorio
2020-07-10 02:15:07 -04:00
committed by GitHub
parent 8feb276af3
commit 62cf3c00a0
6 changed files with 42 additions and 0 deletions

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package com.baeldung.isinstancevsisassignablefrom;
public class IsoscelesTriangle extends Triangle {
}

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package com.baeldung.isinstancevsisassignablefrom;
public interface Shape {
}

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package com.baeldung.isinstancevsisassignablefrom;
public class Triangle implements Shape {
}

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package com.baeldung.isinstancevsisassignablefrom;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import org.junit.Test;
public class IsInstanceIsAssignableFromUnitTest {
@Test
public void whenUsingIsInstanceProperly_desiredResultsHappen() {
Shape shape = new Triangle();
Triangle triangle = new Triangle();
IsoscelesTriangle isoscelesTriangle = new IsoscelesTriangle();
Triangle isoscelesTriangle2 = new IsoscelesTriangle();
Shape nonspecificShape = null;
assertTrue(Shape.class.isInstance(shape));
assertTrue(Shape.class.isInstance(triangle));
assertTrue(Shape.class.isInstance(isoscelesTriangle));
assertTrue(Shape.class.isInstance(isoscelesTriangle2));
assertFalse(Shape.class.isInstance(nonspecificShape));
assertTrue(Triangle.class.isInstance(shape));
assertTrue(Triangle.class.isInstance(triangle));
assertTrue(Triangle.class.isInstance(isoscelesTriangle));
assertTrue(Triangle.class.isInstance(isoscelesTriangle2));
assertFalse(IsoscelesTriangle.class.isInstance(shape));
assertFalse(IsoscelesTriangle.class.isInstance(triangle));
assertTrue(IsoscelesTriangle.class.isInstance(isoscelesTriangle));
assertTrue(IsoscelesTriangle.class.isInstance(isoscelesTriangle2));
}
@Test
public void whenUsingIsAssignableFromProperly_desiredResultsHappen() {
Shape shape = new Triangle();
Triangle triangle = new Triangle();
IsoscelesTriangle isoscelesTriangle = new IsoscelesTriangle();
Triangle isoscelesTriangle2 = new IsoscelesTriangle();
assertFalse(shape.getClass().isAssignableFrom(Shape.class));
assertTrue(shape.getClass().isAssignableFrom(shape.getClass()));
assertTrue(shape.getClass().isAssignableFrom(triangle.getClass()));
assertTrue(shape.getClass().isAssignableFrom(isoscelesTriangle.getClass()));
assertTrue(shape.getClass().isAssignableFrom(isoscelesTriangle2.getClass()));
assertFalse(triangle.getClass().isAssignableFrom(Shape.class));
assertTrue(triangle.getClass().isAssignableFrom(shape.getClass()));
assertTrue(triangle.getClass().isAssignableFrom(triangle.getClass()));
assertTrue(triangle.getClass().isAssignableFrom(isoscelesTriangle.getClass()));
assertTrue(triangle.getClass().isAssignableFrom(isoscelesTriangle2.getClass()));
assertFalse(isoscelesTriangle.getClass().isAssignableFrom(Shape.class));
assertFalse(isoscelesTriangle.getClass().isAssignableFrom(shape.getClass()));
assertFalse(isoscelesTriangle.getClass().isAssignableFrom(triangle.getClass()));
assertTrue(isoscelesTriangle.getClass().isAssignableFrom(isoscelesTriangle.getClass()));
assertTrue(isoscelesTriangle.getClass().isAssignableFrom(isoscelesTriangle2.getClass()));
assertFalse(isoscelesTriangle2.getClass().isAssignableFrom(Shape.class));
assertFalse(isoscelesTriangle2.getClass().isAssignableFrom(shape.getClass()));
assertFalse(isoscelesTriangle2.getClass().isAssignableFrom(triangle.getClass()));
assertTrue(isoscelesTriangle2.getClass().isAssignableFrom(isoscelesTriangle.getClass()));
assertTrue(isoscelesTriangle2.getClass().isAssignableFrom(isoscelesTriangle2.getClass()));
}
}