相关疑难解决方法(0)

我需要创建一个基类,它实现了许多方法的接口,例如下面的例子.

是否有更简单的方法来委派这些方法调用而无需创建大量重复方法？

public class MultipleInterfaces implements InterFaceOne, InterFaceTwo {

    private InterFaceOne if1;
    private InterFaceTwo if2;

    public MultipleInterfaces() {
      if1 = new ImplementingClassOne();
      if2 = new ImplementingClassTwo();
    }

    @Override
    public void classOneMethodOne { if1.methodOne(); }
    @Override
    public void classOneMethodTwo { if1.methodTwo(); }
    /** Etc. */


    @Override
    public void classTwoMethodOne { if2.methodOne(); }
    @Override
    public void classTwoMethodTwo { if2.methodTwo(); }
    /** Etc. */

}

什么原因导致Tomcat出现这种错误？

SEVERE: Exception loading sessions from persistent storage
java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException:
   bean.ProjectAreaBean
 at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1333)
 at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
 at java.util.ArrayList.readObject(ArrayList.java:593)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(
    DelegatingMethodAccessorImpl.java:25)