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Ӌ(j)C(j)(j)ԇjava֪R(sh)c(din)

r(sh)g2025-10-02 21:54:52 javaZ(y)

Ӌ(j)C(j)(j)ԇjava֪R(sh)c(din)

(hu)(jng)(zhng)ʮּʲôʹ҂?c)ڱǰÓf?֪R(sh)njW(xu)(x)ǰٷ־W(wng)СӋ(j)C(j)(j)ԇjava֪R(sh)c(din)gӭW(xu)(x)!

Ӌ(j)C(j)(j)ԇjava֪R(sh)c(din)

c(din)һU(ku)չӋ(j)ƽ_(ti)

1.2.5 javaƽ_(ti)-U(ku)չӋ(j)ƽ_(ti)

javaHǾZ(y)ԣ߀һ(g)_l(f)ƽ_(ti)javag(sh)oTṩS๤ߣgęnļߵȵȡͬr(sh)java߀һ(g)l(f)ƽ_(ti)ЃɷNҪ"l(f)h(hun)"java\(yn)Еr(sh)h(hun)(java runtime environment(jin)QJRE)ļSҪĞg[ṩjava\(yn)Еr(sh)h(hun)ĿǰSun˾javaƽ_(ti)ֳJ2EEJ2SEJ2ME(g)ƽ_(ti)ᘌ(du)ͬЈ(chng)Ŀ(bio)O(sh)M(jn)жλJ2EEJava2 Enterprise EditionҪĿǞI(y)Ӌ(j)ṩһ(g)(yng)÷(w)\(yn)к_l(f)ƽ_(ti)J2EEһ(g)_ŵĘ(bio)(zhn)κܛS̶ƳԼķJ2EE(bio)(zhn)Įa(chn)ƷʹÑжNxIBMOracleBEAHP29ѽ(jng)ƳԼĮa(chn)ƷBEA˾weglogica(chn)ƷIBM˾websphareJ2EE𲽰l(f)չɞc΢ܛ.NET(zhn)(du)ľW(wng)j(lu)Ӌ(j)ƽ_(ti)J2SEJava2 Standard EditionҪĿǞ_(ti)ʽC(j)͹վṩһ(g)_l(f)\(yn)еƽ_(ti)҂?c)ڌW(xu)(x)java^(gu)ҪDzJ2SE(li)M(jn)_l(f)J2MEJava2 Micro EditionҪM(fi)Ӯa(chn)ƷM(fi)Ӯa(chn)Ʒṩһ(g)java\(yn)ƽ_(ti)ʹjava܉֙C(j)C(j)픺СPDAȮa(chn)Ʒ\(yn)

c(din)JavaZ(y)c(din)

1.2.4 JavaZ(y)Եc(din)

1. (jin)?q)͞?/p>

javaĺ(jin)wF(xin)ھ(jin)ϵy(tng)DСϵy(tng)(sh)F(xin)Ĺ;(du)ӲҪ󲻸С͵Ӌ(j)C(j)ϱõ\(yn)еһijO(sh)Ӌ(j)Z(y)һӣjavaҲ?q)g(sh)ӏصеjavaappletnj(du)bԌ(sh)F(xin)ģKϢ[^Ԍ(sh)F(xin)˴aď(f)ãÑԽԼ(k)javaõ(du)(jin)ε?q)g(sh)ȥ\(yn)d^еď(f)sˆһ^(qing)D(zhun)Qྀ(ָ)ȷʽo(w)Ã(ni)Ԅ(dng)ՙC(j)ҲʹóTM(fi)Ĺ(ni)dzO(sh)Ӌ(j)Ӻ(jin)ͬr(sh)p˳e(cu)ĿjavaZ(y)ԲCZ(y)еĴ󲿷Z(y)ϤCZ(y)ԵijT(hu)l(f)F(xin)javaZ(y)Z(y)cCZ(y)ԘOơ

2. Ұȫ

javaZ(y)ھg\(yn)гr(sh)ҪM(jn)Ї(yn)ęzһN(qing)Z(y)ԣjavaھgBӕr(sh)M(jn)д͙z飬ֹƥ䆖(wn)}İl(f)һ(g)Ƿ͡(zh)һ(g)ǷͲjavaڽጕr(sh)ָԓe(cu)`javaвܲõַӋ(j)ķͨ^(gu)ָL(wn)(ni)Ԫpe(cu)`l(f)Ŀ;javaĔ(sh)Mָᘌ(sh)F(xin)@ӾͿڙzб┵(sh)MԽİl(f)o(w)Ã(ni)Ԅ(dng)ՙC(j)Ҳjava

W(wng)j(lu)Z(y)javaṩİȫҪֹujava\(yn)Б(yng)ór(sh)(yn)zL(wn)(sh)(j)ę(qun)粻SW(wng)j(lu)ϵđ(yng)ó޸ıصĔ(sh)(j)dÑӋ(j)C(j)еֹ(ji)a䱻(zh)ǰҪ(jng)^(gu)һ(g)ˌ(sh)һֹ(ji)aˌ(sh)java(li)(zh)Уԓͨ^(gu)ֹ(du)(ni)ֱL(wn)(li)M(jn)һjavaİȫͬr(sh)javaOߵҲ(qing)javaİȫ

3. Y(ji)(gu)ҿֲ

W(wng)j(lu)ϳM˸Nͬ͵ęC(j)Ͳϵy(tng)ʹjavaھW(wng)j(lu)κεط\(yn)javaggcwϵY(ji)(gu)o(w)P(gun)ֹ(ji)aY(ji)(gu)ļʽκηNӋ(j)C(j)ֻ̎Ͳϵy(tng)java\(yn)Еr(sh)h(hun)ֹ(ji)aļͿԓӋ(j)C(j)\(yn)ʹچһϵy(tng)Ӌ(j)C(j)Y(ji)(gu)ҲзdzáS̎Y(ji)(gu)IJl(f)չ׃TòN汾ijڲͬ̎\(yn)@ʹ_l(f)܉ƽ_(ti)ϹܛDzܵʹjavaʹͬһ汾đ(yng)ó\(yn)еƽ_(ti)ϡ

wϵY(ji)(gu)Ҳʹjavaϵy(tng)пֲjava\(yn)Еr(sh)ϵy(tng)ֲͬ̎Ͳϵy(tng)javaľgjavaZ(y)Ԍ(sh)F(xin)ģjavaZ(y)Ժ͘(bio)(zhn)CZ(y)Ԍ(sh)F(xin)˿^鷽M(jn)ֲ

4.

mȻjavaǽገ(zh)еȻзdzߵܣһЩضCPUjavaֹ(ji)aԿٵD(zhun)QɞC(j)aM(jn)Ј(zh)javaֹ(ji)aʽO(sh)Ӌ(j)ᘌ(du)C(j)aD(zhun)Q(sh)HD(zhun)Qr(sh)ஔ(dng)(jin)㣬Ԅ(dng)ļĴcg(du)ֹ(ji)aһЩ(yu)ʹ֮ɸ|(zh)ĴaSjava̓MC(j)ĸM(jn)"r(sh)g"(just in time)g(sh)ijF(xin)ʹjavaĈ(zh)ٶ˸

5. ገ(zh)ྀ̲DŽ(dng)B(ti)

ڌ(sh)F(xin)ƽ_(ti)ԣjavaO(sh)Ӌ(j)ɞገ(zh)ֹ(ji)aSྎgr(sh)ɵϢʹB^(gu)̸Ӻ(jin)ྀʹ(yng)óͬr(sh)M(jn)вͬIJ̎ͬ¼ڶྀ̙C(j)Уͬľ̎ͬ΄(w)棬(hu)ijһ΄(w)̎ڵȴB(ti)Ӱ΄(w)Ĉ(zh)@ӾͿ׵Č(sh)F(xin)W(wng)j(lu)ϵČ(sh)r(sh)javaڈ(zh)^(gu)УԄ(dng)B(ti)ļdN(k)@һc(din)ʹ֮dzmھW(wng)j(lu)\(yn)ͬr(sh)Ҳdzܛ_l(f)ʹǸ(k)Ҳ¾gʹ@һ(k)đ(yng)ó

˽CZ(y)ԺC++Z(y)ԅjavacC/C++Z(y)Եı^˽CZ(y)ԺC++Z(y)ԺԱ֪R(sh)

a. ȫ׃

javaܶxȫ׃еĹoB(ti)׃ஔ(dng)@(g)ȫ׃@Ӿʹȫ׃bC˰ȫC/C++Z(y)ڲӷbȫ׃(hu)ʹò(dng)ϵy(tng)ı

b. lD(zhun)ָ

C/C++Z(y)gotoZ(y)䌍(sh)F(xin)o(w)lD(zhun)javaZ(y)ԛ](mi)g(sh)otoZ(y)ͨ^(gu)̎Z(y)trycatchfinally(li)ȡ֮˳ĿxԣҲ(qing)˳

c. ָ

ָC/C++Z(y)`Ҳ׳e(cu)Ĕ(sh)(j)ָM(jn)Ѓ(ni)ɲA(y)֪e(cu)`ͨ^(gu)ָᘌ(du)(ni)ַM(jn)@ʾD(zhun)Q󣬿˽гɆTƉ˰ȫjavaTM(jn)κָᘲͬr(sh)javaеĔ(sh)Mͨ^(gu)(li)(sh)F(xin)ܺõĽQ˔(sh)MԽ@һC/C++Z(y)вzȱc(din)

d. (ni)

CZ(y)TʹÎ(k)(sh)malloc()free()(li)ጷŃ(ni)C++Z(y)Єt\(yn)newdeleteٴጷѽ(jng)ጷŵă(ni)Kጷδă(ni)K(hu)ϵy(tng)ıӛጷŲʹõă(ni)KҲ(hu)uıMϵy(tng)YԴjavaеĔ(sh)(j)Y(ji)(gu)nj(du)ͨ^(gu)\(yn)new(ni)沢õ(du)ʹÙ(qun)o(w)Ã(ni)ՙC(j)ƱCϵy(tng)YԴ˃(ni)ܶϵy(tng)

e. (sh)(j)͵һ

C/C++Z(y)ͬƽ_(ti)ϣg(du)(jin)εĔ(sh)(j)intfloatȷքe䲻ֹͬ(ji)(sh)磺intIBM PCϞ16λVAX-11Ͼ͞32λ(do)˴a(sh)(j)IJֲjava(du)(sh)(j)͵λ(sh)係ǹ̶κεӋ(j)C(j)ƽ_(ti)ϡ˾ͱCjava(sh)(j)ƽ_(ti)o(w)P(gun)ԺͿֲ

f. D(zhun)Q

C/C++Z(y)Уͨ^(gu)ָM(jn)D(zhun)QȫشӡjavaZ(y)ϵy(tng)Ҫ(du)(du)̎M(jn)Ї(yn)ԙzֹȫD(zhun)Q

g. ^ļ

C/C++Z(y)ʹ^ļ•ԭͺȫ׃(k)(sh)ȣڴϵy(tng)So(h)@Щ^ļǷdzyjava֧^ļɆTͺL(wn)(qun)޶bһ(g)\(yn)Еr(sh)ϵy(tng)(du)L(wn)M(jn)пƣֹǷL(wn)ͬr(sh)javaimportZ(y)cM(jn)ͨԱL(wn)Č(du)

h. Y(ji)(gu)“(lin)

C/C++Z(y)ýY(ji)(gu)“(lin)ρ(li)ʾһĔ(sh)(j)Y(ji)(gu)ɆT鹫еȫϴچ(wn)}javaֽ֧Y(ji)(gu)“(lin)ϣͨ^(gu)є(sh)(j)Y(ji)(gu)(du)ԓ(sh)(j)IJb

i. A(y)̎

C/C++Z(y)к궨xú궨x(sh)F(xin)ĴaӰ푳Ŀxjavaֺ֧궨x

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