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Ӌ(j)C(j)(j)JAVA֪R(sh)(f)(x)

r(sh)g2025-09-18 10:50:11 javaZ(y)

2017Ӌ(j)C(j)(j)JAVA֪R(sh)(f)(x)

W(xu)(x) Java ʿ(du) Java vʷϰl(f)Ĵ¼һ(g)˽Ǒ(yng)ԓǰٷ־W(wng)С2017Ӌ(j)C(j)(j)JAVA֪R(sh)(ni)ݣgӭW(xu)(x)!

2017Ӌ(j)C(j)(j)JAVA֪R(sh)(f)(x)

1JavaĚvʷF(xin)

1 Javavʷ

o(j) 90 sun ˾һ(g) Green (xing)ĿĿǞM(fi)Ӯa(chn)Ʒ_(ki)l(f)һ(g)ֲʽaϵy(tng)@ӾͿԌ(du)M(jn)пƣM(jn)Ϣղķ˹·˹(James Gosling)˻ C++_(ki)l(f)һNµZ(y) Oak(Java ǰ)Oak һNھW(wng)j(lu)ľɶȫZ(y) Sun ˾Ͷ(bio)һ(g)ʽҕ(xing)Ŀ Y(ji)DZ SGISun 㒁 OakS“(lin)W(wng)İl(f)չSun Oak Ӌ(j)C(j)W(wng)j(lu)ϵďV韑(yng)ǰǸ Oak 1995 5 “Java”Qʽl(f)Ĵ Java Ϸs֮·

(dng)ȻᵽJava vʷòһ(g)¾Java _(ki)ʼ“Oak”(xing)ĿСMkĘ(sh) Oak ̘(bio)˾ע(c)ˣȡһ(g)f(shu)һλ Java ɆTMĕ(hu)TӑՓo@(g)µZ(y)ȡʲô(dng)r(sh)ڿ^ Java(צ)һ(g)`C(j)һ(dng)f(shu)ͽ Java õ˵ٝͬJava @(g)־@ӂ_(ki)(dng)Ȼ(du)ڂf(shu)˽һ¾ͺˣ^(gu)J(rn)

2 Java

W(xu)(x) Java ʿ(du) Java vʷϰl(f)Ĵ¼һ(g)˽Ǒ(yng)ԓ

JDK (Java Software Develop Kit) )Java ܛ_(ki)l(f)߰JDK Java ĺ Java \(yn)Эh(hun)һϵ Java _(ki)l(f)ߺ Java A(ch)(li)(k)Ŀǰ JDK Sun ˾l(f) JDK Sun ֮߀кܶ๫˾ͽM_(ki)l(f)Լ JDK IBM ˾_(ki)l(f) JDKBEA ˾ Jrocket߀ GNU M_(ki)l(f) JDK ȵ

3 Javac(din)

(jin)εf(shu)Java c(din)(jin)ε?q)ƽ_(ti)o(w)P(gun)ֲྀ̡ʽȫɿ͡Ԅ(dng)յc(din)

@ֻһƽ_(ti)o(w)P(gun)ͷֲʽں(hu)𲽽|

3.1 ƽ_(ti) o(w)P(gun)

^ƽ_(ti)o(w)P(gun)ָǣ Java (xi)ij޸ľͿڲͬܛӲƽ_(ti)\(yn)@Ӿ܌(sh)F(xin)ͬӵijȿ Windows \(yn) Unix Linux h(hun)޸ľֱӿ\(yn)ˡJava Ҫ Java ̓MC(j)(JVM)(sh)F(xin)ƽ_(ti)o(w)P(gun)

ƽ_(ti)o(w)P(gun)Ծһξ(xi)̎\(yn)УWrite Once, Run Anywhere

3.2 ֲʽ

ֲʽָǣ ܛɺܶ(g)Ԫ(d)(zh)еģKM @ЩģKֲڶ_(ti)Ӌ(j)C(j)ϣͬr(sh)\(yn)(du)⿴(li)߀һ(g)wҲf(shu)ֲʽ܉Ѷ_(ti)Ӌ(j)C(j)(li)һ_(ti)Ӌ(j)C(j)һӣĶṩõ

4 Java(bio) (zhn)M ——JCP

JCP(Java Community Process) һ(g)_(ki)ŵć(gu)HM 1995 Ҫšǰl(f)չ͸ Java g(sh)Ҏ(gu)(sh)F(xin)(RI) g(sh)ݰ(TCK) Java g(sh) JCP ߵԭ(chung)߶ SUN Ӌ(j)C(j)˾MɆTύ JSR(Java Specification Requests) ͨ^(gu)ӑՓJ(rn)ɡԺM(jn)뵽һ汾Ҏ(gu)

Ҳf(shu) JCP Ŀǰ Java g(sh)l(f)չŒ(sh)ϵĿߺI(lng)(do)

2JavaaĻ֪R(sh)

1 Z(y)

÷̖(ho)”;”Y(ji)βһдaZ(y)Java Z(y)”;”Y(ji)β

磺int a = 10;

ЉKZ(y)磺

2 K (block )

һ(g)K{}߅Z(y)ļϣKǶ磺

3 ע

ʲôע?ǘ(bio)עጵ˼ҪÁ(li)(du) Java aM(jn)f(shu)Java N

עጷʽ

õ javadoc (bio) ӛ

@author

@version汾

@deprecated]ʹõķ

@paramą(sh)(li)

@returnķ(li)

@see"Ҋ(jin)"ָă(ni)

@exceptionĮ

@throwsĮ exception ͬx

javadoc (bio) ӛ đ(yng)

(li)ͽӿęnעеĘ(bio)ӛ@see @deprecated @author @version

ڷߘ(gu)췽еĘ(bio)ӛ:@see @deprecated @param @return @exception

@throws

ڌęnעеĘ(bio)ӛ:@see @deprecated

4 ո

һ(g) Java κΔ(sh)ĿոS

5 Java ľa s

Щ߀](mi)ЌW(xu)](mi)P(gun)ϵ˽һ¡

(li) (li)(yng)ԓ~С(xi)ɻĸ(yng)(xi)磺

class AccountBook

class ComplexVariable

ӿ ӿС(xi)Ҏ(gu)tc(li)ͬ

interface Account

(yng)ԓDŽ(dng)~С(xi)ɻĸ(yng)С(xi)ÿ(g)(ni)(xi)ĸ~ָʹ„磺

balanceAccount( )

addComplex( )

׃ ׃ɴС(xi)ãַ(yng)С(xi)~ɴ(xi)ĸָ„ʹԪ̖(ho)($) ?yn)@(g)ַ(du)(ni)(li)ĺx

currentCustomer

׃(yng)ԓһĺx ͨ^(gu)ɂ_(d)oxʹD MʹÆ΂(g)ַRr(sh)“ü”׃( i, j, k ѭh(hun)׃) ȫ(xi)„~ָ

HEAD_COUNT

MAXIMUM_SIZE

ƽY(ji)(gu) (dng)Z(y)ǿƽY(ji)(gu)һ֕r(sh)ʹdž΂(g)Z(y)Ҳ(yng)ʹ̖(ho)( { )Z(y)]磺

Z(y) ÿֻ(xi)һ(g)Z(y)䲢ʹĂ(g)sM(jn)ĿոʹĴax

ע עጁ(li)f(shu)Щ@Ĵa; (du)һעʹ /pic/*· · ·*/ָʹ /**· · ·*/עγęnݔo javadoc HTML aęn

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