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  • JavaPԇ֪R(sh)c(din)

    r(sh)g2023-03-07 12:15:18 JAVAJ(rn)C ҪͶ
    • P(gun)]

    JavaPԇ֪R(sh)c(din)\

    JavaṩObject^P(gun)ϵͬһõĘ(sh)ObjectObject܏(qing)(jng)(hu)ʹõСռJavaPԇ֪R(sh)c(din)ϣJ(rn)x!

    JavaPԇ֪R(sh)c(din)\

    1.@Class(du)Nʽ

    // 1. (j)o(li)@ d

    String classname = "cn.itcast.reflect.Person";// (li)ļ

    Class clazz = Class.forName(classname);// ˌ(du)Person.class

    // 2. õˌ(du)֪ʲô ګ@Ì(du)

    Object obj = new Person();

    Class clazz1 = obj.getClass();// @Ì(du)w

    // 3. _ث@ij(g)Class(du) Ҫڂ

    Class clazz2 = Person.class;

    һJava(chung)(du)Ď׷Nʽ

    (1) newZ(y)䄓(chung)(du)@Ҋ(jin)Ą(chung)(du)ķ

    (2) \(yn)÷ֶ,{(dio)java.lang.Classjava.lang.reflect.ConstructornewInstance()(sh)

    (3) {(dio)Ì(du)clone()

    (4) \(yn)÷лֶ{(dio)java.io.ObjectInputStream(du) readObject()

    (1)(2)(hu)_@ʽ{(dio)Ø(gu)캯(sh) ;(3)ڃ(ni)ό(du)Ќ(du)ӰӡԲ(hu){(dio)Ø(gu)캯(sh) ;(4)Ǐļ߀ԭČ(du)Ҳ(hu){(dio)Ø(gu)캯(sh)

    2.Java׃Ϸ

    $ ĸ„_(ki)^Ŀǔ(sh)֡ĸ„;Ԕ(sh)_(ki)^JavaP(gun)I

    3.

    abstractstaticnativesynchronized

    native•طoϵy(tng)ȥ(sh)F(xin)JNI{(dio)Õr(sh)ʹ

    4.oB(ti)׃Main(sh)

    Main(sh)пֱʹstatic׃ֱʹ÷oB(ti)׃ʹ÷oB(ti)׃Ҫnew(du)ʹ

    oB(ti){(dio)÷oB(ti)ķ׃(ѽ(jng)ڵĖ|߀ڵĖ|);oB(ti)ֱ{(dio)oB(ti)׃ҽoxֵڷoB(ti)жxoB(ti)׃;

    5.L(wn)(qun)(ⲿ)

    (1)publicԱL(wn)(all)

    (2)privateֻܱԼL(wn)޸ġ

    (3)protectedͬһ(g)L(wn) 

    (4)default(ĬJ(rn))ͬһеL(wn)•r(sh)](mi)мJ(rn)friendly 

    6.Java^еĘ(gu)췽

    (1)Ę(gu)^(gu)б{(dio)Ę(gu)췽

    (2)ԼĘ(gu)췽ʹsuper(argument_list){(dio)ûĘ(gu)췽

    2.1ʹthis(argument_list){(dio)ñ☋(gu)췽

    2.2{(dio)super회(xi)(gu)췽ĵһС

    (3)Ę(gu)췽Л](mi)@ʾ{(dio)ûĘ(gu)췽tϵy(tng)ĬJ(rn){(dio)ûğo(w)(sh)(gu)췽

    (4)(gu)췽мț](mi)@ʾ{(dio)û(gu)췽֛](mi)Пo(w)(sh)Ę(gu)췽tge(cu)

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