Yuav Ua Li Cas Tus Lej Xeem Yooj Yim hauv Java: 10 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:25

Nov yog cov lus qhia yooj yim rau Java cov lus programming txhais tau rau cov neeg uas tsis paub txog kev paub txog programming.

Cov ntaub ntawv: Khoos phis tawj lossis laptop (nrog dab ntsia)

Tau nruab eclipse ntawm

Kauj ruam 1: Qhib dab noj hnub

Qhib Eclipse program

Kauj ruam 2: Teem Koj Txoj Haujlwm

• Nyem “cov ntaub ntawv” nyob rau sab laug ces kaum hover dua “tshiab” ces nyem rau “java project”
• Nkag mus rau "Tshuab xam zauv" hauv "kab ntawv lub npe" lub thawv ntawv thiab nyem "ua tiav" nyob hauv qab txoj cai

Kauj Ruam 3: Qhib Koj Txoj Haujlwm

• Nyem rau "Tshuab xam zauv" nplaub tshev ntawm sab laug
• Nyem “cov ntaub ntawv” nyob rau sab laug ces kaum hover dua “tshiab” ces nyem rau “chav kawm”

Kauj Ruam 4: Teem Koj Li Chav Kawm

• (CEEB TOOM: Nco ntsoov tias cov ntawv tais ceev tseg hais tias "Tshuab xam zauv/src")
• Nkag mus rau "Calc" hauv "lub npe" lub thawv ntawv Txheeb xyuas lub npov cuam tshuam nrog "Cov pej xeem zoo li qub tsis muaj dab tsi tseem ceeb (Txoj hlua kev sib cav)" thiab "tsim cov lus pom" (nco ntsoov txhua yam ntawm koj lub npov sib phim cov duab) tom qab ntawd nias "Ua tiav"

Kauj Ruam 5: Tsim Koj Lub Tshuab Luam Ntawv

• Rho tawm cov ntawv ntawm kab 29 (Kab lej nyob ntawm sab laug ntawm nplooj ntawv)
• (CEEB TOOM: tam sim no koj yuav pib ntaus koj tus lej kom paub tseeb tias nws tau ua raws nraim li cov kauj ruam hais thiab txhua kab ntawm txoj cai yuav tsum ua raws los ntawm ib nrab lossis);)
• Ntshuam lub scanner los ntawm kev ntaus ntshuam java.util. Scanner; ntawm kab 14 Pib koj cov cai ntawm kab 29 los ntawm kev ntaus Scanner scan = tshiab Scanner (System.in); thiab nias nkag mus

Kauj Ruam 6: Pib Pib Koj Li Kev Hloov

• Ntaus ntawm kab 30 ob tus lej 1; thiab nias nkag mus
• Ntaus ntawm kab 31 ob tus lej 2; thiab nias nkag mus

Kauj Ruam 7: Nug rau Cov Neeg Siv Khoom

• Ntaus kab 33 System.out.println (“Sau thawj tus lej:”); thiab nias nkag mus
• Ntaus ntawm kab 34 num1 = scan.nextDouble (); thiab nias nkag mus
• Ntaus kab 35 System.out.println (“Sau tus lej thib ob:”); thiab nias sau Hom ntawm kab 36 num2 = scan.nextDouble (); thiab nias nkag mus

Kauj Ruam 8: Tau Txais Koj Cov Ntsiab Lus los Luam

• Ntaus kab 38 System.out.println (“Ntxiv:“+ (num1 + num2)); thiab nias nkag mus
• Ntaus kab 39 System.out.println (“Rho tawm:“+ (num1 - num2)); thiab nias nkag mus
• Ntaus kab 40 System.out.println (“Multiplication:“+ (num1 * num2)); thiab nias nkag mus
• Ntaus kab 41 System.out.println (“Division:“+ (num1 / num2)); thiab nias nkag mus

Kauj Ruam 9: Khiav Koj Cov Cai

Nias lub "khiav" (lossis khawm ua si ntsuab) uas tau qhia hauv daim duab hauv qab no xaiv "OK":

Kauj Ruam 10: Txheeb Xyuas Koj Li Kev Tso Tawm

• Saib hauv qab ntawm lub vijtsam rau qhov tso tawm ntawm tus lej nws yuav tsum yog ib kab ntawm kab ntawv uas hais tias "Sau thawj tus lej:"
• (CEEB TOOM: yog tias txoj cai tsis ua haujlwm, tshuaj xyuas cov cai nrog daim duab hauv qab no kauj ruam 8 thiab nco ntsoov tias koj tsis muaj qhov yuam kev)
• Ua raws cov lus qhia uas tau tshwm sim los ntawm kev nkag mus rau txhua tus lej thiab lub laij lej yuav tsum luam tawm cov lus teb ntawm koj ob tus lej ntxiv, rho tawm, faib, thiab sib npaug zoo li cov duab saum toj no