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refactor example

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This commit is contained in:
Chris Oberle 2018-05-30 07:40:26 -04:00
parent 543c87fa70
commit d683b370f6
2 changed files with 20 additions and 43 deletions
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38
core-java-8/src/main/java/com/baeldung/reflect/Person.java
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@ -2,41 +2,17 @@ package com.baeldung.reflect;
public class Person { public class Person {
private String firstName; private String fullName;
private String lastName;
private Integer age;
public Person(String firstName, String lastName, Integer age) { public Person(String fullName) {
this.firstName = firstName; this.fullName = fullName;
this.lastName = lastName;
this.age = age;
} }
public Person() {} public void setFullName(String fullName) {
this.fullName = fullName;
public String getFirstName() {
return firstName;
} }
public void setFirstName(String firstName) { public String getFullName() {
this.firstName = firstName; return fullName;
} }
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
} }

25
core-java-8/src/test/java/com/baeldung/reflect/MethodParamNameTest.java
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@ -5,29 +5,30 @@ import static org.assertj.core.api.Assertions.assertThat;
import java.lang.reflect.Parameter; import java.lang.reflect.Parameter;
import java.util.Arrays; import java.util.Arrays;
import java.util.List; import java.util.List;
import java.util.Optional;
import static java.util.stream.Collectors.toList;
import org.junit.Test; import org.junit.Test;
public class MethodParamNameTest { public class MethodParamNameTest {
@Test @Test
public void whenGetConstructorParams_thenOk() throws NoSuchMethodException, SecurityException { public void whenGetConstructorParams_thenOk()
throws NoSuchMethodException, SecurityException {
List<Parameter> parameters List<Parameter> parameters
= Arrays.asList( = Arrays.asList(Person.class.getConstructor(String.class).getParameters());
Person.class.getConstructor(String.class, String.class, Integer.class) Optional<Parameter> parameter
.getParameters()); = parameters.stream().filter(Parameter::isNamePresent).findFirst();
List<String> parameterNames assertThat(parameter.get().getName()).isEqualTo("fullName");
= parameters.stream().map(Parameter::getName).collect(toList());
assertThat(parameterNames)
.containsExactlyInAnyOrder("lastName", "firstName", "age");
} }
@Test @Test
public void whenGetMethodParams_thenOk() throws NoSuchMethodException, SecurityException { public void whenGetMethodParams_thenOk()
throws NoSuchMethodException, SecurityException {
List<Parameter> parameters List<Parameter> parameters
= Arrays.asList( = Arrays.asList(
Person.class.getMethod("setLastName", String.class).getParameters()); Person.class.getMethod("setFullName", String.class).getParameters());
assertThat(parameters.get(0).getName()).isEqualTo("lastName"); Optional<Parameter> parameter
= parameters.stream().filter(Parameter::isNamePresent).findFirst();
assertThat(parameter.get().getName()).isEqualTo("fullName");
} }
} }