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OverLoadTest

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LingZhaoHui 2021-05-15 13:54:58 +08:00
parent 8f5c25863d
commit 05fbaceeb1
6 changed files with 134 additions and 0 deletions
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49
.classpath Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<classpathentry kind="src" output="target/classes" path="src/main/java">
<attributes>
<attribute name="optional" value="true"/>
<attribute name="maven.pomderived" value="true"/>
</attributes>
</classpathentry>
<classpathentry excluding="**" kind="src" output="target/classes" path="src/main/resources">
<attributes>
<attribute name="maven.pomderived" value="true"/>
</attributes>
</classpathentry>
<classpathentry kind="src" output="target/test-classes" path="src/test/java">
<attributes>
<attribute name="optional" value="true"/>
<attribute name="maven.pomderived" value="true"/>
<attribute name="test" value="true"/>
</attributes>
</classpathentry>
<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
<attributes>
<attribute name="maven.pomderived" value="true"/>
</attributes>
</classpathentry>
<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">
<attributes>
<attribute name="maven.pomderived" value="true"/>
</attributes>
</classpathentry>
<classpathentry kind="src" path="target/generated-sources/annotations">
<attributes>
<attribute name="optional" value="true"/>
<attribute name="maven.pomderived" value="true"/>
<attribute name="ignore_optional_problems" value="true"/>
<attribute name="m2e-apt" value="true"/>
</attributes>
</classpathentry>
<classpathentry kind="src" output="target/test-classes" path="target/generated-test-sources/test-annotations">
<attributes>
<attribute name="optional" value="true"/>
<attribute name="maven.pomderived" value="true"/>
<attribute name="ignore_optional_problems" value="true"/>
<attribute name="m2e-apt" value="true"/>
<attribute name="test" value="true"/>
</attributes>
</classpathentry>
<classpathentry kind="output" path="target/classes"/>
</classpath>

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.project Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>java</name>
<comment></comment>
<projects>
</projects>
<buildSpec>
<buildCommand>
<name>org.eclipse.jdt.core.javabuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>org.eclipse.m2e.core.maven2Builder</name>
<arguments>
</arguments>
</buildCommand>
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<natures>
<nature>org.eclipse.jdt.core.javanature</nature>
<nature>org.eclipse.m2e.core.maven2Nature</nature>
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<filteredResources>
<filter>
<id>1620913278283</id>
<name></name>
<type>30</type>
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</filteredResources>
</projectDescription>

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.settings/org.eclipse.jdt.apt.core.prefs Normal file
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eclipse.preferences.version=1
org.eclipse.jdt.apt.aptEnabled=false

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.settings/org.eclipse.jdt.core.prefs Normal file
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eclipse.preferences.version=1
org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
org.eclipse.jdt.core.compiler.compliance=1.8
org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning
org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=ignore
org.eclipse.jdt.core.compiler.processAnnotations=disabled
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org.eclipse.jdt.core.compiler.source=1.8

4
.settings/org.eclipse.m2e.core.prefs Normal file
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activeProfiles=
eclipse.preferences.version=1
resolveWorkspaceProjects=true
version=1

36
src/main/java/com/zeekling/overload/OverLoadTest.java Normal file
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package com.zeekling.overload;
import java.util.*;
public class OverLoadTest {
public static void main(String[] args) {
Collection<?>[] collections =
{new HashSet<String>(), new ArrayList<String>(), new HashMap<String, String>().values()};
Super subToSuper = new Sub();
for(Collection<?> collection: collections) {
System.out.println(subToSuper.getType(collection));
}
}
abstract static class Super {
public static String getType(Collection<?> collection) {
return "Super:collection";
}
public static String getType(List<?> list) {
return "Super:list";
}
public String getType(ArrayList<?> list) {
return "Super:arrayList";
}
public static String getType(Set<?> set) {
return "Super:set";
}
public String getType(HashSet<?> set) {
return "Super:hashSet";
}
}
static class Sub extends Super {
public static String getType(Collection<?> collection) {
return "Sub"; }
}
}