首先代码如下：
package com.tee.effct.code.example.clone;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
/**
* Created by tll on 2017/4/6.
*/
public class CloneExample3 {
public static void main(String[] args) {
Map<String, String> map1 = new HashMap<>();
map1.put("x", "y");
map1.put("a", "b");
map1.put("c", "d");
map1.put("e", "d");
map1.put("f", "b");
map1.put("m", "n");
Map<String, ArrayList<String>> map2 = new HashMap<>();
String entryValue = null;
String entryKay = null;
ArrayList<String> tmpValue = new ArrayList<>();
ArrayList<String> tmpMap2Value = new ArrayList<>();
for (Map.Entry<String, String> entry : map1.entrySet()) {
tmpValue.clear();
tmpMap2Value.clear();
entryKay = entry.getKey();
entryValue = entry.getValue();
if (map2.keySet().contains(entryValue)) {
tmpMap2Value = map2.get(entryValue);
tmpMap2Value.add(entryKay);
map2.put(entryValue, (ArrayList<String>) tmpMap2Value.clone());
} else {
tmpValue.add(entryKay);
map2.put(entryValue, (ArrayList<String>) tmpValue.clone());
}
}
System.out.println(map2);
}
}
报错误如下：
"C:\Program Files\Java\jdk1.8.0_66\bin\java" -Didea.launcher.port=7533 "-Didea.launcher.bin.path=D:\IntelliJ IDEA 2016.1.3\bin" -Dfile.encoding=UTF-8 -classpath "C:\Program Files\Java\jdk1.8.0_66\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_66\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_66\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_66\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_66\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_66\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_66\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_66\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_66\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_66\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_66\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_66\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_66\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_66\jre\lib\ext\zipfs.jar;C:\Program Files\Java\jdk1.8.0_66\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_66\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_66\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_66\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_66\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_66\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_66\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_66\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_66\jre\lib\rt.jar;D:\studyCode\effective;D:\IntelliJ IDEA 2016.1.3\lib\idea_rt.jar" com.intellij.rt.execution.application.AppMain com.tee.effct.code.example.clone.CloneExample3
Exception in thread "main" java.lang.ClassNotFoundException: com.tee.effct.code.example.clone.CloneExample3
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:122)
Process finished with exit code 1
解决方案如下：
相关知识链接如下：
