這是一個非常簡單的代碼:爲什麼簡單的代碼會加載很多類?
package test;
public class Test {
public static void main(String[] args) {
System.out.println("test");
}
}
我運行:JAVA -verbose:類測試,並以下爲輸出。爲什麼這麼多的類加載?根據需要不是Java加載類?
[Opened C:\Program Files\Java\jdk1.7.0_11\jre\lib\rt.jar]
[Loaded java.lang.Object from C:\Program Files\Java\jdk1.7.0_11\jre\lib\rt.jar]
[Loaded java.io.Serializable from C:\Program Files\Java\jdk1.7.0_11\jre\lib\rt.jar]
[Loaded java.lang.Comparable from C:\Program Files\Java\jdk1.7.0_11\jre\lib\rt.jar]
[Loaded java.lang.CharSequence from C:\Program Files\Java\jdk1.7.0_11\jre\lib\rt.jar]
[Loaded java.lang.String from C:\Program Files\Java\jdk1.7.0_11\jre\lib\rt.jar]
[Loaded java.lang.reflect.GenericDeclaration from C:\Program Files\Java\jdk1.7.0_11\jre\lib\rt.jar]
[Loaded java.lang.reflect.Type from C:\Program Files\Java\jdk1.7.0_11\jre\lib\rt.jar]
[Loaded java.lang.reflect.AnnotatedElement from C:\Program Files\Java\jdk1.7.0_11\jre\lib\rt.jar]
[Loaded java.lang.Class from C:\Program Files\Java\jdk1.7.0_11\jre\lib\rt.jar]
[Loaded java.lang.Cloneable from C:\Program Files\Java\jdk1.7.0_11\jre\lib\rt.jar]
[Loaded java.lang.ClassLoader from C:\Program Files\Java\jdk1.7.0_11\jre\lib\rt.jar]
[Loaded java.lang.System from C:\Program Files\Java\jdk1.7.0_11\jre\lib\rt.jar]
[Loaded java.lang.Throwable from C:\Program Files\Java\jdk1.7.0_11\jre\lib\rt.jar]
[Loaded java.lang.Error from C:\Program Files\Java\jdk1.7.0_11\jre\lib\rt.jar]
...
test
[Loaded java.lang.Shutdown from C:\Program Files\Java\jdk1.7.0_11\jre\lib\rt.jar]
[Loaded java.lang.Shutdown$Lock from C:\Program Files\Java\jdk1.7.0_11\jre\lib\rt.jar]
這可能會幫助您:http://www.ibm.com/developerworks/java/library/j-dyn0429/ – Maroun 2013-03-24 19:08:47
是的,此鏈接(ibm.com/developerworks/java/library/j-dyn0429)具有回答我的問題。謝謝! – user2067036 2013-03-25 05:22:43