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How to use replace method of org.powermock.api.support.membermodification.MemberModifier class

Best Powermock code snippet using org.powermock.api.support.membermodification.MemberModifier.replace

Source:MemberModificationExampleTest.java

...39import static org.powermock.api.support.membermodification.MemberMatcher.field;40import static org.powermock.api.support.membermodification.MemberMatcher.method;41import static org.powermock.api.support.membermodification.MemberMatcher.methods;42import static org.powermock.api.support.membermodification.MemberMatcher.methodsDeclaredIn;43import static org.powermock.api.support.membermodification.MemberModifier.replace;44import static org.powermock.api.support.membermodification.MemberModifier.stub;45import static org.powermock.api.support.membermodification.MemberModifier.suppress;46/**47 * Demonstrates PowerMock's ability to modify member structures.48 */49@RunWith(PowerMockRunner.class)50@PrepareForTest({SuppressMethod.class, SuppressField.class, SuppressEverything.class})51public class MemberModificationExampleTest {52    @Rule53    public PowerMockRule powerMockRule = new PowerMockRule();54    @Test55    public void suppressSingleMethodExample() throws Exception {56        suppress(method(SuppressMethod.class, "getObject"));57        assertNull(new SuppressMethod().getObject());58    }59    @Test60    public void suppressMultipleMethodsExample1() throws Exception {61        suppress(methods(SuppressMethod.class, "getObject", "getInt"));62        assertNull(new SuppressMethod().getObject());63        assertEquals(0, new SuppressMethod().getInt());64    }65    @Test66    public void suppressMultipleMethodsExample2() throws Exception {67        suppress(methods(method(SuppressMethod.class, "getObject"), method(SuppressMethod.class, "getInt")));68        assertNull(new SuppressMethod().getObject());69        assertEquals(0, new SuppressMethod().getInt());70    }71    @Test72    public void suppressAllMethodsExample() throws Exception {73        suppress(methodsDeclaredIn(SuppressMethod.class));74        final SuppressMethod tested = new SuppressMethod();75        assertNull(tested.getObject());76        assertNull(SuppressMethod.getObjectStatic());77        assertEquals(0, tested.getByte());78    }79    @Test80    public void suppressSingleFieldExample() throws Exception {81        suppress(field(SuppressField.class, "domainObject"));82        SuppressField tested = new SuppressField();83        assertNull(tested.getDomainObject());84    }85    @Test86    public void suppressConstructorExample() throws Exception {87        suppress(constructor(SuppressConstructorHierarchy.class));88        SuppressConstructorHierarchy tested = new SuppressConstructorHierarchy("message");89        assertEquals(42, tested.getNumber());90        assertNull(tested.getMessage());91    }92    @Test93    public void stubSingleMethodExample() throws Exception {94        final String expectedReturnValue = "new";95        stub(method(SuppressMethod.class, "getObject")).toReturn(expectedReturnValue);96        final SuppressMethod tested = new SuppressMethod();97        assertEquals(expectedReturnValue, tested.getObject());98        assertEquals(expectedReturnValue, tested.getObject());99    }100    @Test101    public void duckTypeStaticMethodExample() throws Exception {102        replace(method(SuppressMethod.class, "getObjectStatic")).with(103                method(StaticAndInstanceDemo.class, "getStaticMessage"));104        assertEquals(SuppressMethod.getObjectStatic(), StaticAndInstanceDemo.getStaticMessage());105    }106    @Test107    public void whenReplacingMethodWithAMethodOfIncorrectReturnTypeThenAnIAEIsThrown() throws Exception {108        try {109            replace(method(SuppressMethod.class, "getObjectStatic")).with(110                    method(StaticAndInstanceDemo.class, "aVoidMethod"));111            fail("Should thow IAE");112        } catch (Exception e) {113            assertEquals("The replacing method (public static void samples.staticandinstance.StaticAndInstanceDemo.aVoidMethod()) needs to return java.lang.Object and not void.", e.getMessage());114        }115    }116    @Test117    public void whenReplacingMethodWithAMethodOfWithIncorrectParametersThenAnIAEIsThrown() throws Exception {118        try {119            replace(method(SuppressMethod.class, "getObjectStatic")).with(120                    method(StaticAndInstanceDemo.class, "aMethod2"));121            fail("Should thow IAE");122        } catch (Exception e) {123            assertEquals("The replacing method, \"public static java.lang.Object samples.staticandinstance.StaticAndInstanceDemo.aMethod2(java.lang.String)\", needs to have the same number of parameters of the same type as as method \"public static java.lang.Object samples.suppressmethod.SuppressMethod.getObjectStatic()\".", e.getMessage());124        }125    }126    @Test127    public void changingReturnValueExample() throws Exception {128        replace(method(SuppressMethod.class, "getObjectWithArgument")).with(new ReturnValueChangingInvocationHandler());129        final SuppressMethod tested = new SuppressMethod();130        assertThat(tested.getObjectWithArgument("don't do anything"), is(instanceOf(Object.class)));131        assertEquals("hello world", tested.getObjectWithArgument("make it a string"));132    }133    @Test134    public void suppressAllConstructors() throws Exception {135        suppress(constructorsDeclaredIn(SuppressEverything.class));136        SuppressEverything suppressEverything = new SuppressEverything();137        new SuppressEverything("test");138        try {139            suppressEverything.something();140            fail("Should throw ISE");141        } catch (IllegalStateException e) {142            assertEquals("error", e.getMessage());...

Source:PowerMockMemberModifierSupport.java

...86    }87    /**88     * Replace a method invocation.89     */90    protected final MethodReplaceStrategy replace(Method method) {91        return MemberModifier.replace(method);92    }93}...

Source:MyClass1Test.java

...6import java.lang.reflect.InvocationHandler;7import java.lang.reflect.Method;8import static org.junit.Assert.assertEquals;9import static org.powermock.api.support.membermodification.MemberMatcher.method;10import static org.powermock.api.support.membermodification.MemberModifier.replace;11import static org.powermock.api.support.membermodification.MemberModifier.stub;12@PrepareForTest(MyClass1.class)13@RunWith(PowerMockRunner.class)14public class MyClass1Test {15    @Test16    public void testStubbingStaticMethod() throws Exception {17        stub(method(MyClass1.class, "hello")).toReturn("Hello World");18        assertEquals("Hello World", MyClass1.hello("Frank Oh"));19    }20    @Test21    public void testStubbingPrivateMethod() throws Exception {22        stub(method(MyClass1.class, "goodbye")).toReturn("Something");23        assertEquals("Something", new MyClass1().goodByeWrapper("Frank Oh"));24    }25    @Test26    public void testReplacingStaticMethod() throws Exception {27        replace(method(MyClass1.class, "hello")).with(28                new InvocationHandler() {29                    public Object invoke(Object object, Method method,30                                         Object[] arguments) throws Throwable {31                        if (arguments[0].equals("John")) {32                            return "Hello John, you are awesome!";33                        } else {34                            return method.invoke(object, arguments);35                        }36                    }37                });38        assertEquals("Hello Someone", MyClass1.hello("Someone"));39        assertEquals("Hello John, you are awesome!", MyClass1.hello("John"));40    }41    @Test42    public void testReplacingNonStaticMethod() throws Exception {43        replace(method(MyClass1.class, "nonStaticHello")).with(44                new InvocationHandler() {45                    public Object invoke(Object object, Method method,46                                         Object[] arguments) throws Throwable {47                        if (arguments[0].equals("Frank")) {48                            return "NonStatic Hello John, you are awesome!";49                        } else {50                            return method.invoke(object, arguments);51                        }52                    }53                });54        assertEquals("NonStatic Hello Someone", new MyClass1().nonStaticHello("Someone"));55        assertEquals("NonStatic Hello John, you are awesome!", new MyClass1().nonStaticHello("Frank"));56    }57}...

replace

Using AI Code Generation

1package org.powermock.examples.tutorial.membermodification;2import org.junit.Test;3import org.junit.runner.RunWith;4import org.powermock.api.support.membermodification.MemberModifier;5import org.powermock.core.classloader.annotations.PrepareForTest;6import org.powermock.modules.junit4.PowerMockRunner;7import java.lang.reflect.Field;8import static org.junit.Assert.assertEquals;9import static org.powermock.api.support.membermodification.MemberMatcher.field;10import static org.powermock.api.support.membermodification.MemberMatcher.method;11import static org.powermock.api.support.membermodification.MemberModifier.suppress;12@RunWith(PowerMockRunner.class)13@PrepareForTest(ExampleService.class)14public class ExampleServiceTest {15    public void testPrivateMethod() throws Exception {16        ExampleService exampleService = new ExampleService();17        MemberModifier.field(ExampleService.class, "name").set(exampleService, "Gustav");18        String result = (String) MemberModifier19                .method(ExampleService.class, "greet")20                .withParameterTypes(String.class)21                .invoke(exampleService, "Gustav");22        assertEquals("Hello Gustav", result);23    }24    public void testPrivateField() throws Exception {25        ExampleService exampleService = new ExampleService();26        MemberModifier.field(ExampleService.class, "name").set(exampleService, "Gustav");27        String name = (String) MemberModifier.field(ExampleService.class, "name").get(exampleService);28        assertEquals("Gustav", name);29    }30    public void testStaticMethod() throws Exception {31        String result = (String) MemberModifier32                .staticMethod(ExampleService.class, "greetStatic")33                .withParameterTypes(String.class)34                .invoke("Gustav");35        assertEquals("Hello Gustav", result);36    }

replace

Using AI Code Generation

1package org.powermock.examples.tutorial.membermodification;2import org.junit.Assert;3import org.junit.Test;4import org.junit.runner.RunWith;5import org.powermock.core.classloader.annotations.PrepareForTest;6import org.powermock.modules.junit4.PowerMockRunner;7import org.powermock.reflect.Whitebox;8import static org.powermock.api.support.membermodification.MemberMatcher.method;9import static org.powermock.api.support.membermodification.MemberModifier.replace;10@RunWith(PowerMockRunner.class)11@PrepareForTest({ClassWithStaticMethod.class})12public class MemberModificationReplaceMethodTest {13    public void replaceMethodWithAnotherMethod() throws Exception {14        replace(method(ClassWithStaticMethod.class, "staticMethod"))15                .with(method(MemberModificationReplaceMethodTest.class, "replacementMethod"));16        Assert.assertEquals("Hello", ClassWithStaticMethod.staticMethod());17    }18    public void replaceMethodWithAnotherMethodUsingWhitebox() throws Exception {19        Whitebox.replaceMethod(ClassWithStaticMethod.class, "staticMethod",20                method(MemberModificationReplaceMethodTest.class, "replacementMethod"));21        Assert.assertEquals("Hello", ClassWithStaticMethod.staticMethod());22    }23    public void replaceMethodWithAnotherMethodUsingMemberModifier() throws Exception {24        org.powermock.api.support.membermodification.MemberModifier.replace(method(ClassWithStaticMethod.class, "staticMethod"),25                method(MemberModificationReplaceMethodTest.class, "replacementMethod"));26        Assert.assertEquals("Hello", ClassWithStaticMethod.staticMethod());27    }28    public static String replacementMethod() {29        return "Hello";30    }31}32package org.powermock.examples.tutorial.membermodification;33public class ClassWithStaticMethod {34    public static String staticMethod() {35        return "Bye";36    }37}38package org.powermock.examples.tutorial.membermodification;39import org.junit.Assert;40import org.junit.Test;41import org.junit.runner.RunWith;42import org.powermock.core.classloader.annotations.PrepareForTest;43import org.powermock.modules.junit4.PowerMockRunner;44import org.powermock.reflect.Whitebox;45import static org.powermock.api.support.membermodification.MemberMatcher.method;46import static org.powermock.api.support.membermodification.MemberModifier.replace;47@RunWith(PowerMockRunner.class)48@PrepareForTest({ClassWithStaticMethod.class})49public class MemberModificationReplaceMethodTest {50    public void replaceMethodWithAnotherMethod()

replace

Using AI Code Generation

1package org.powermock.examples.tutorial.membermodification;2import java.util.ArrayList;3import java.util.List;4import org.junit.Test;5import org.junit.runner.RunWith;6import org.powermock.core.classloader.annotations.PrepareForTest;7import org.powermock.modules.junit4.PowerMockRunner;8import org.powermock.reflect.Whitebox;9@RunWith(PowerMockRunner.class)10@PrepareForTest( { MemberModification.class })11public class MemberModificationTest {12	public void test() throws Exception {13		MemberModification mock = new MemberModification();14		List<String> list = new ArrayList<String>();15		list.add("a");16		list.add("b");17		list.add("c");18		Whitebox.setInternalState(mock, "list", list);19		Whitebox.invokeMethod(mock, "replace", 1, "d");20		System.out.println(list);21	}22}23package org.powermock.examples.tutorial.membermodification;24import java.util.ArrayList;25import java.util.List;26import org.junit.Test;27import org.junit.runner.RunWith;28import org.powermock.core.classloader.annotations.PrepareForTest;29import org.powermock.modules.junit4.PowerMockRunner;30import org.powermock.reflect.Whitebox;31@RunWith(PowerMockRunner.class)32@PrepareForTest( { MemberModification.class })33public class MemberModificationTest {34	public void test() throws Exception {35		MemberModification mock = new MemberModification();36		List<String> list = new ArrayList<String>();37		list.add("a");38		list.add("b");39		list.add("c");40		Whitebox.setInternalState(mock, "list", list);41		Whitebox.invokeMethod(mock, "replace", 1, "d");42		System.out.println(list);43	}44}45package org.powermock.examples.tutorial.membermodification;46import java.util.ArrayList;47import java.util.List;48import org.junit.Test;49import org.junit.runner.RunWith;50import org.powermock.core.classloader.annotations.PrepareForTest;51import org.powermock.modules.junit4.PowerMockRunner;52import org.powermock.reflect.Whitebox;53@RunWith(PowerMockRunner.class)54@PrepareForTest( { MemberModification.class })55public class MemberModificationTest {56	public void test() throws Exception {

replace

Using AI Code Generation

1import org.powermock.api.support.membermodification.MemberModifier;2import org.powermock.reflect.Whitebox;3public class 4 {4    public static void main(String[] args) throws Exception {5        String str = "Hello";6        MemberModifier.field(String.class, "value").set(str, new char[]{'H', 'i'});7        System.out.println(str);8    }9}10import org.powermock.api.support.membermodification.MemberModifier;11import org.powermock.reflect.Whitebox;12public class 5 {13    public static void main(String[] args) throws Exception {14        String str = "Hello";15        MemberModifier.field(String.class, "value").set(str, new char[]{'H', 'i'});16        System.out.println(str);17    }18}19import org.powermock.api.support.membermodification.MemberModifier;20import org.powermock.reflect.Whitebox;21public class 6 {22    public static void main(String[] args) throws Exception {23        String str = "Hello";24        MemberModifier.field(String.class, "value").set(str, new char[]{'H', 'i'});25        System.out.println(str);26    }27}28import org.powermock.api.support.membermodification.MemberModifier;29import org.powermock.reflect.Whitebox;30public class 7 {31    public static void main(String[] args) throws Exception {32        String str = "Hello";33        MemberModifier.field(String.class, "value").set(str, new char[]{'H', 'i'});34        System.out.println(str);35    }36}37import org.powermock.api.support.membermodification.MemberModifier;38import org.powermock.reflect.Whitebox;39public class 8 {40    public static void main(String[] args) throws Exception {41        String str = "Hello";42        MemberModifier.field(String.class, "value").set(str, new char[]{'H', 'i'});43        System.out.println(str);44    }45}46import org.power

replace

Using AI Code Generation

1package org.powermock.examples.tutorial.membermodification;2import java.lang.reflect.Method;3import org.powermock.api.support.membermodification.MemberModifier;4public class ReplaceMethodExample {5    public static void main(String[] args) throws Exception {6        Method replaceMethod = ReplaceMethodExample.class.getDeclaredMethod("replaceMethod");7        Method newMethod = ReplaceMethodExample.class.getDeclaredMethod("newMethod");8        MemberModifier.replace(replaceMethod, newMethod);9        ReplaceMethodExample example = new ReplaceMethodExample();10        example.replaceMethod();11    }12    public void replaceMethod(){13        System.out.println("This is the original method");14    }15    public void newMethod(){16        System.out.println("This is the new method");17    }18}19package org.powermock.examples.tutorial.membermodification;20import org.powermock.reflect.Whitebox;21public class ReplaceMethodExample2 {22    public static void main(String[] args) throws Exception {23        Method replaceMethod = ReplaceMethodExample.class.getDeclaredMethod("replaceMethod");24        Method newMethod = ReplaceMethodExample.class.getDeclaredMethod("newMethod");25        Whitebox.replace(replaceMethod, newMethod);26        ReplaceMethodExample example = new ReplaceMethodExample();27        example.replaceMethod();28    }29}30package org.powermock.examples.tutorial.membermodification;31import org.powermock.reflect.Whitebox;32public class ReplaceMethodExample3 {33    public static void main(String[] args) throws Exception {34        Method replaceMethod = ReplaceMethodExample.class.getDeclaredMethod("replaceMethod");35        Method newMethod = ReplaceMethodExample.class.getDeclaredMethod("newMethod");36        Whitebox.replace(replaceMethod, newMethod);37        ReplaceMethodExample example = new ReplaceMethodExample();38        example.replaceMethod();39    }40}41package org.powermock.examples.tutorial.membermodification;42import org.powermock

replace

Using AI Code Generation

1package org.powermock.examples.tutorial.membermodification;2import org.junit.Test;3import org.junit.runner.RunWith;4import org.powermock.api.support.membermodification.MemberModifier;5import org.powermock.core.classloader.annotations.PrepareForTest;6import org.powermock.modules.junit4.PowerMockRunner;7import static org.junit.Assert.assertEquals;8import static org.junit.Assert.assertTrue;9import static org.powermock.api.support.membermodification.MemberMatcher.method;10import static org.powermock.api.support.membermodification.MemberModifier.suppress;11@RunWith(PowerMockRunner.class)12@PrepareForTest(Example4.class)13public class Example4 {14    public void testReplacePrivateMethod() throws Exception {15        Example4 example4 = new Example4();16        MemberModifier.replace(method(Example4.class, "privateMethod"), example4, "Hello World");17        String result = example4.callPrivateMethod();18        assertEquals("Hello World", result);19    }20    public void testSuppressPrivateMethod() throws Exception {21        Example4 example4 = new Example4();22        suppress(method(Example4.class, "privateMethod"));23        String result = example4.callPrivateMethod();24        assertTrue(result.isEmpty());25    }26    private String privateMethod() {27        return "This method is private";28    }29    private String callPrivateMethod() throws Exception {30        return (String) MemberModifier.method(Example4.class, "privateMethod").invoke(this);31    }32}33package org.powermock.examples.tutorial.membermodification;34import org.junit.Test;35import org.junit.runner.RunWith;36import org.powermock.api.support.membermodification.MemberModifier;37import org.powermock.core.classloader.annotations.PrepareForTest;38import org.powermock.modules.junit4.PowerMockRunner;39import static org.junit.Assert.assertEquals;40import static org.junit.Assert.assertTrue;41import static org.powermock.api.support.membermodification.MemberMatcher.method;42import static org.powermock.api.support.membermodification.MemberModifier.suppress;43@RunWith(PowerMockRunner.class)44@PrepareForTest(Example4.class)45public class Example4 {46    public void testReplacePrivateMethod() throws Exception {

replace

Using AI Code Generation

1package org.powermock.examples.tutorial.membermodification;2import static org.junit.Assert.assertEquals;3import static org.junit.Assert.assertNotNull;4import static org.junit.Assert.assertTrue;5import static org.powermock.api.support.membermodification.MemberMatcher.method;6import static org.powermock.api.support.membermodification.MemberModifier.replace;7import java.io.IOException;8import org.junit.Test;9import org.junit.runner.RunWith;10import org.powermock.api.easymock.PowerMock;11import org.powermock.core.classloader.annotations.PrepareForTest;12import org.powermock.modules.junit4.PowerMockRunner;13@RunWith(PowerMockRunner.class)14@PrepareForTest( { ClassWithFinalMethods.class })15public class FinalMethodExampleTest {16	public void testFinalMethodReplacement() throws Exception {17		final String newValue = "new value";18		replace(method(ClassWithFinalMethods.class, "finalMethod")).with(19				new Runnable() {20					public void run() {21						System.out.println(newValue);22					}23				});24		ClassWithFinalMethods tested = new ClassWithFinalMethods();25		tested.finalMethod();26	}27}28package org.powermock.examples.tutorial.membermodification;29import static org.junit.Assert.assertEquals;30import static org.junit.Assert.assertNotNull;31import static org.junit.Assert.assertTrue;32import static org.powermock.api.support.membermodification.MemberMatcher.method;33import static org.powermock.api.support.membermodification.MemberModifier.replace;34import java.io.IOException;35import org.junit.Test;36import org.junit.runner.RunWith;37import org.powermock.api.easymock.PowerMock;38import org.powermock.core.classloader.annotations.PrepareForTest;39import org.powermock.modules.junit4.PowerMockRunner;40@RunWith(PowerMockRunner.class)41@PrepareForTest( { ClassWithFinalMethods.class })42public class FinalMethodExampleTest {43	public void testFinalMethodReplacement() throws Exception {44		final String newValue = "new value";45		replace(method(ClassWithFinalMethods.class, "finalMethod")).with(46				new Runnable() {47					public void run() {48						System.out.println(newValue);49					}50				});51		ClassWithFinalMethods tested = new ClassWithFinalMethods();52		tested.finalMethod();53	}54}

replace

Using AI Code Generation

1import org.powermock.api.support.membermodification.MemberModifier;2import org.powermock.reflect.Whitebox;3public class 4 {4public static void main(String[] args) throws Exception {5MemberModifier.replace(4.class, "get").with("test");6System.out.println(get());7}8public static String get() {9return "Hello";10}11}

replace

Using AI Code Generation

1import org.powermock.api.support.membermodification.MemberModifier;2import org.powermock.reflect.Whitebox;3import java.lang.reflect.Method;4public class ClassToTest {5    public String methodToTest() {6        return "Hello World";7    }8    public String methodToTest2() {9        return "Hello World2";10    }11}12public class ClassToTestTest {13    public void testMethodToTest() throws Exception {14        ClassToTest classToTest = new ClassToTest();15        Method method = ClassToTest.class.getDeclaredMethod("methodToTest");16        MemberModifier.replace(method, classToTest, "Hello World2");17        assertEquals("Hello World2", classToTest.methodToTest());18    }19    public void testMethodToTest2() throws Exception {20        ClassToTest classToTest = new ClassToTest();21        Method method = ClassToTest.class.getDeclaredMethod("methodToTest2");22        MemberModifier.replace(method, classToTest, "Hello World");23        assertEquals("Hello World", classToTest.methodToTest2());24    }25}26import org.powermock.api.support.membermodification.MemberModifier;27import org.powermock.reflect.Whitebox;28import java.lang.reflect.Method;29public class ClassToTest {30    public String methodToTest() {31        return "Hello World";32    }33    public String methodToTest2() {34        return "Hello World2";35    }36}37public class ClassToTestTest {38    public void testMethodToTest() throws Exception {39        ClassToTest classToTest = new ClassToTest();40        Method method = ClassToTest.class.getDeclaredMethod("methodToTest");41        MemberModifier.replace(method, classToTest, "Hello World2");42        assertEquals("Hello World2", classToTest.methodToTest());43    }44    public void testMethodToTest2() throws Exception {45        ClassToTest classToTest = new ClassToTest();46        Method method = ClassToTest.class.getDeclaredMethod("methodToTest2");47        MemberModifier.replace(method, classToTest, "Hello World");48        assertEquals("Hello World", classToTest.methodToTest2());49    }50}

replace

Using AI Code Generation

1package com.example;2import java.io.IOException;3import java.io.InputStream;4import java.io.OutputStream;5import org.powermock.api.support.membermodification.MemberModifier;6public class A {7    public A() {8        System.out.println("A");9    }10}11public class B extends A {12    public B() {13        System.out.println("B");14    }15}16public class C extends B {17    public C() {18        System.out.println("C");19    }20}21public class D extends C {22    public D() {23        System.out.println("D");24    }25}26public class E extends D {27    public E() {28        System.out.println("E");29    }30}31public class F extends E {32    public F() {33        System.out.println("F");34    }35}36public class G extends F {37    public G() {38        System.out.println("G");39    }40}41public class H extends G {42    public H() {43        System.out.println("H");44    }45}46public class I extends H {47    public I() {48        System.out.println("I");49    }50}51public class J extends I {52    public J() {53        System.out.println("J");54    }55}56public class K extends J {57    public K() {58        System.out.println("K");59    }60}61public class L extends K {62    public L() {63        System.out.println("L");64    }65}66public class M extends L {67    public M() {68        System.out.println("M");69    }70}71public class N extends M {72    public N() {73        System.out.println("N");74    }75}76public class O extends N {77    public O() {78        System.out.println("O");79    }80}81public class P extends O {82    public P() {83        System.out.println("P");84    }85}86public class Q extends P {87    public Q() {88        System.out.println("Q");89    }90}91public class R extends Q {92    public R() {93        System.out.println("R");94    }95}96public class S extends R {97    public S() {98        System.out.println("S");99    }100}101public class T extends S {102    public T() {103        System.out.println("T");104    }105}106public class U extends T {107    public U() {108        System.out.println("U");109    }110}111public class V extends U {112    public V() {113        System.out.println("V");114    }115}116public class W extends V {

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