java新手提问,该怎么解决

/** *Parent.java */public class Parent {    private int eatID=0;    public Parent(){        System.out.println("Parent is creating..");        eat();    }    public void eat(){        System.out.println("Parent is eat: "+eatID);    }}

/** *Son.java */public class Son extends Parent {    private int eatID=1;    public Son(){        System.out.println("Son is creating..");        eat();    }    public void eat(){        System.out.println("Son is eat: "+eatID);    }    @SuppressWarnings(value={"unused"})    public static void main(String[] args){        Parent p=new Son();    }}

Classfile /Son.classLast modified 2011-6-26; size 373 bytesMD5 checksum f425bcb4f6d0dbd5e8450c356525a0ebCompiled from "Son.java"public class Son extends Parent  SourceFile: "Son.java"  minor version: 0  major version: 50  flags: ACC_PUBLIC, ACC_SUPER  Constant pool:const #1 = Method    #6.#18;    //  Parent."<init>":()Vconst #2 = Field    #4.#19;    //  Son.eatID:Iconst #3 = Method    #4.#20;    //  Son.eat:()Vconst #4 = class    #21;    //  Sonconst #5 = Method    #4.#18;    //  Son."<init>":()Vconst #6 = class    #22;    //  Parentconst #7 = Asciz    eatID;const #8 = Asciz    I;const #9 = Asciz    <init>;const #10 = Asciz    ()V;const #11 = Asciz    Code;const #12 = Asciz    LineNumberTable;const #13 = Asciz    eat;const #14 = Asciz    main;const #15 = Asciz    ([Ljava/lang/String;)V;const #16 = Asciz    SourceFile;const #17 = Asciz    Son.java;const #18 = NameAndType    #9:#10;    //  "<init>":()Vconst #19 = NameAndType    #7:#8;    //  eatID:Iconst #20 = NameAndType    #13:#10;    //  eat:()Vconst #21 = Asciz    Son;const #22 = Asciz    Parent;{public Son();  flags: ACC_PUBLIC  Code:   Stack=2, Locals=1, Args_size=1   0:    aload_0   1:    invokespecial    #1; //Method Parent."<init>":()V   4:    aload_0   5:    iconst_1   6:    putfield    #2; //Field eatID:I   9:    aload_0   10:    invokevirtual    #3; //Method eat:()V   13:    return  LineNumberTable:    line 3: 0   line 2: 4   line 5: 9   line 6: 13public void eat();  flags: ACC_PUBLIC  Code:   Stack=1, Locals=2, Args_size=1   0:    aload_0   1:    getfield    #2; //Field eatID:I   4:    istore_1   5:    return  LineNumberTable:    line 9: 0   line 10: 5public static void main(java.lang.String[]);  flags: ACC_PUBLIC, ACC_STATIC  Code:   Stack=2, Locals=2, Args_size=1   0:    new    #4; //class Son   3:    dup   4:    invokespecial    #5; //Method "<init>":()V   7:    astore_1   8:    return  LineNumberTable:    line 13: 0   line 14: 8}Classfile /Parent.classLast modified 2011-6-26; size 298 bytesMD5 checksum 3a9133d4b82f26cac2da21e973f55e2eCompiled from "Son.java"class Parent extends java.lang.Object  SourceFile: "Son.java"  minor version: 0  major version: 50  flags: ACC_SUPER  Constant pool:const #1 = Method    #5.#15;    //  java/lang/Object."<init>":()Vconst #2 = Field    #4.#16;    //  Parent.eatID:Iconst #3 = Method    #4.#17;    //  Parent.eat:()Vconst #4 = class    #18;    //  Parentconst #5 = class    #19;    //  java/lang/Objectconst #6 = Asciz    eatID;const #7 = Asciz    I;const #8 = Asciz    <init>;const #9 = Asciz    ()V;const #10 = Asciz    Code;const #11 = Asciz    LineNumberTable;const #12 = Asciz    eat;const #13 = Asciz    SourceFile;const #14 = Asciz    Son.java;const #15 = NameAndType    #8:#9;    //  "<init>":()Vconst #16 = NameAndType    #6:#7;    //  eatID:Iconst #17 = NameAndType    #12:#9;    //  eat:()Vconst #18 = Asciz    Parent;const #19 = Asciz    java/lang/Object;{public Parent();  flags: ACC_PUBLIC  Code:   Stack=2, Locals=1, Args_size=1   0:    aload_0   1:    invokespecial    #1; //Method java/lang/Object."<init>":()V   4:    aload_0   5:    iconst_0   6:    putfield    #2; //Field eatID:I   9:    aload_0   10:    invokevirtual    #3; //Method eat:()V   13:    return  LineNumberTable:    line 20: 0   line 19: 4   line 22: 9   line 23: 13public void eat();  flags: ACC_PUBLIC  Code:   Stack=1, Locals=2, Args_size=1   0:    aload_0   1:    getfield    #2; //Field eatID:I   4:    istore_1   5:    return  LineNumberTable:    line 26: 0   line 27: 5}