Head First Java学习：漫画式入门与核心技术

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ቤ

๔ՊႀՊႀႀײႾ

๬๬࿢ڦߛܠࠀీג

ጆຍᇕბသǈ໲ඟేຫഐ

ࣆઠԲۉ๫ࠔ࿿ೕڢዷ׼ට࣏

ᄲૣ࡞ƽૣ࡞ƽƽ

public class PhraseOMatic {

public static void main (String[] args) {

ేᅜໜᅪڦฉഄ໱ຍᇕ໱ຍᇕຍᇕ

String[] wordListOne = {“24/7”,”multi-

Tier”,”30,000 foot”,”B-to-B”,”win-win”,”front-

end”, “web-based”,”pervasive”, “smart”, “six-

sigma”,”critical-path”, “dynamic”};

String[] wordListTwo = {“empowered”, “sticky”,

“value-added”, “oriented”, “centric”, “distributed”,

“clustered”, “branded”,”outside-the-box”, “positioned”,

“networked”, “focused”, “leveraged”, “aligned”,

“targeted”, “shared”, “cooperative”, “accelerated”};

String[] wordListThree = {“process”, “tipping-

point”, “solution”, “architecture”, “core competency”,

“strategy”, “mindshare”, “portal”, “space”, “vision”,

“paradigm”, “mission”};

໙௅ᅃፇᆶܠณ߲ఁَຍᇕ

int oneLength = wordListOne.length;

int twoLength = wordListTwo.length;

int threeLength = wordListThree.length;

ׂิໜຕጴ

int rand1 = (int) (Math.random() * oneLength);

int rand2 = (int) (Math.random() * twoLength);

int rand3 = (int) (Math.random() * threeLength);

ፇࢇጆຍᇕ

String phrase = wordListOne[rand1] + “ “ +

wordListTwo[rand2] + “ “ + wordListThree[rand3];

๼

System.out.println(“What we need is a “ + phrase);

}

ࡻ

ຕು৶೟փ໙๟ኈኟڦᆌᆩײႾ

ස

ࡕᄲߴ઻ӱ࢔ԀڦײႾ

ఫ৽ӝጆຍԀڦײႾ

ఫ৽ӝጆຍڦײႾ

ఫ৽ӝጆຍ

ᇕბသײႾႯઠ

ጀᅪǖړేጲ๼෇ኄ߲ײႾ

้ǈփᄲሞጴޙزዐ࣑ႜǄᄺ

৽๟Đđޙࡽኮǅǈփ඗ڦࣆ

ײႾ࿮݆ཚࡗՊᅳײႾă

Ԩ߁౒

ే၄ሞڦ࿋ዃ4

ጆຍᇕბသ

໲๟සࢆ߾ፕڦ߾ፕڦፕڦ

ڇں঄ǈ໲๟ᆯ

ፇڇጴໜ཈ઠಇଚፇࢇ๼ăሡ้փᆩڅ႐ేփۮగᅃں঄ǈ໲๟ᆯ

ፇڇጴໜ཈ઠಇଚፇࢇ๼ăሡ้փᆩڅ႐ేփۮగᅃ঄ǈ໲๟ᆯ

ፇڇጴໜ཈ઠಇଚፇࢇ๼ăሡ้փᆩڅ႐ేփۮగᅃ

ႜײႾሞፔ๊஺ǈԹ৩࿢்֍ߑ๔ܸᅙă

ڼᅃ߲օየ๟ظ

String

ڦຕፇǈᄺ৽๟ԍ٪ຍᇕڦඹഗăຕፇڦำ௽ظ

String

ڦຕፇǈᄺ৽๟ԍ٪ຍᇕڦඹഗăຕፇڦำ௽

String

ڦຕፇǈᄺ৽๟ԍ٪ຍᇕڦඹഗăຕፇڦำ௽ำ௽

ࢅظ๟࢔ڇڦǈူ௬๟ᅃ߲૩ጱǖ๟࢔ڇڦǈူ௬๟ᅃ߲૩ጱǖ

String[] pets = {“Fido”, “Zeus”, “Bin”};

௅߲ᇮ໎ݣሞᆅࡽዐժԵُᅜۺࡽݴăݣሞᆅࡽዐժԵُᅜۺࡽݴăᅜۺࡽݴă

Ǡ ྺକᄲሞ௅߲ຕፇዐీࠕໜں཈ᅃ߲ڇጴǈ࿢்ڥኪڢ௅߲ຕፇڦٷକᄲሞ௅߲ຕፇዐీࠕໜں཈ᅃ߲ڇጴǈ࿢்ڥኪڢ௅߲ຕፇڦٷں཈ᅃ߲ڇጴǈ࿢்ڥኪڢ௅߲ຕፇڦٷ཈ᅃ߲ڇጴǈ࿢்ڥኪڢ௅߲ຕፇڦٷ

ၭăසࡕగ߲ຕፇᆶ

߲ڇጴǈሶ࿢்Ⴔᄲ঻ᇀ

ڦໜຕǄ

Java

ڦຕፇ๟ଭċ

ڦໜຕǄ

Java

ڦຕፇ๟ଭ

ڦໜຕǄ

Java

ڦຕፇ๟ଭ

ڦǈڼᅃ߲ᇮ໎ڦ໭ᆅ๟

ǈڼܾ߲๟

ǈሞᆶ

߲ᇮ໎ڦຕፇዐፌࢫᅃ߲ڦ໭

ᆅ๟

ǅăేᅜၠຕፇֱკ໲ڦ׊܈ǖֱკ໲ڦ׊܈ǖ໲ڦ׊܈ǖ

int x = pets.length;

ኴႜᅜࢫ

ڦኵྺ

࿢்Ⴔᄲ

߲ໜຕă

Java

Ԩวᆶᅃፇ૬ᆩڦຕბݛ݆Ǆᅜӝ໲்ړፕፇ૬ᆩڦຕბݛ݆Ǆᅜӝ໲்ړፕ૬ᆩڦຕბݛ݆Ǆᅜӝ໲்ړፕݛ݆Ǆᅜӝ໲்ړፕǄᅜӝ໲்ړፕ

ࡧຕǅă

random()

ኄ߲ݛ݆ࣷݓ࣮঻ᇀ

ᇑ

ኮڦኵǈ໯ᅜ࿢்Ⴔᄲُኵױᅜݛ݆ࣷݓ࣮঻ᇀ

ᇑ

ኮڦኵǈ໯ᅜ࿢்Ⴔᄲُኵױᅜࣷݓ࣮঻ᇀ

ᇑ

ኮڦኵǈ໯ᅜ࿢்Ⴔᄲُኵױᅜݓ࣮঻ᇀ

ᇑ

ኮڦኵǈ໯ᅜ࿢்Ⴔᄲُኵױᅜ঻ᇀ

ᇑ

ኮڦኵǈ໯ᅜ࿢்Ⴔᄲُኵױᅜኮڦኵǈ໯ᅜ࿢்Ⴔᄲُኵױᅜڦኵǈ໯ᅜ࿢்Ⴔᄲُኵױᅜ

ຕፇڦᇮ໎ຕଉǄຕፇڦٷၭǅǈ඗ࢫൽኝຕኵǄڼ

ቤࣷ༪ஃǅăසࡕᄲܔඪࢆ

ޝۅຕൽኝຕኵᄺ๟ᆩኄᄣڦݛ݆ገ࣑ຕૌ႙ǖૌ႙ǖǖ

int x = (int) 24.6;

၄ሞ࿢்ᅜظጆᆩڦຍᇕă჋

߲ጴ඗ࢫ๑ᆩĐ

đኄ߲ሏ໙ޙጴޙظጆᆩڦຍᇕă჋

߲ጴ඗ࢫ๑ᆩĐ

đኄ߲ሏ໙ޙጴޙጆᆩڦຍᇕă჋

߲ጴ඗ࢫ๑ᆩĐ

đኄ߲ሏ໙ޙጴޙሏ໙ޙጴޙጴޙ

زܔၡ૶থሞᅃഐă๑ᆩ໭ᆅຕጴᅜຕፇዐڦᇮ໎༵ൽઠǖ૶থሞᅃഐă๑ᆩ໭ᆅຕጴᅜຕፇዐڦᇮ໎༵ൽઠǖথሞᅃഐă๑ᆩ໭ᆅຕጴᅜຕፇዐڦᇮ໎༵ൽઠǖ

String s = pets[0]; // “Fido”

s = s + “ “ + “is a dog”; // “Fido is a dog”

ፌࢫǈ࿢்঳ࡕ๼ڟంସଚฉǈే৽ᅜᆅᆩኄၵຍᇕຫདഐઠ࢔ૣ

࡞ڍ๟ྜඇுᆶᅪᅭڦጱă

࿢்ᅜ๼ူ௬

ኄၵჾփᅭڦຍ

ᇕ

čč

pervasive targeted

process

dynamic outside-

the-box tipping-

point

smart distributed

core competency

24/7 empowered

mindshare

30,000 foot win-win

vision

six-sigma net-

worked portal

ቤ

Java

ႵెႵె

๊஺Ǜే྘ၲӕǛኄ࿋ٷฮǈ࿢

๟

Java

ҭăኻᆶ࿢֍ీඟײႾሏႜഐઠăሏႜഐઠăഐઠă

ేኻ๟ׂิ࿔ܸᅙăፔ߲࿔ᆶ๊஺କ࿔ܸᅙăፔ߲࿔ᆶ๊஺କܸᅙăፔ߲࿔ᆶ๊஺କፔ߲࿔ᆶ๊஺କ߲࿔ᆶ๊஺କ࿔ᆶ๊஺କᆶ๊஺କ

փഐڦǈுᆶ࿢ǈ࿔ுᆶᆩƽ࿔ுᆶᆩƽᆩƽ

࣏ᆶǈేڥ૙փචටǈ௅ཀ઻๟য়ߢටǈ

ၭၭᅃۅᇕ݆ٱဃᄺփݣ຤čč

ᅱઞǈ࿢ᆼுᆶຫేᅃۅᆩتۼுᆶă

ڍຫኈڦǈ࿢ߵԨߟփۮేሞፔ๊஺ă

ײႾᇵᅜ኱থՊႀܾ৊዆پஓߴ࿢ሏᇵᅜ኱থՊႀܾ৊዆پஓߴ࿢ሏᅜ኱থՊႀܾ৊዆پஓߴ࿢ሏՊႀܾ৊዆پஓߴ࿢ሏႀܾ৊዆پஓߴ࿢ሏܾ৊዆پஓߴ࿢ሏߴ࿢ሏሏ

ႜǈఫే৽฿ᄽઞǈྍࡘࡘࡘččྍࡘࡘǈఫే৽฿ᄽઞǈྍࡘࡘࡘččྍࡘࡘ

ࡘččččྍࡘࡘčč

ံփ࠶໲ڦၲำ࿚༶ăే࣏๟ுᆶ࣮ٴ࿢໲ڦၲำ࿚༶ăే࣏๟ுᆶ࣮ٴ࿢ڦၲำ࿚༶ăే࣏๟ுᆶ࣮ٴ࿢

ేڟڹᆶ๊஺ᆩتǛ

Պᅳഗ

൩ేݣፎዘۅǈփ඗࿢ᄲঢକă

ܔփഐǈுᆶ࿢ేీሏႜ๊஺Ǜ

Java

ࣷยሏႜ๊஺Ǜ

Java

ࣷย๊஺Ǜ

Java

ࣷย

ׯኄᄣ๟ᆶᇱᅺڦăසࡕ

Java

ኻ๟߲኱

ᅳᇕჾǈᄲᅃՉሏႜᅃՉ঴ᅳك࿔ጴڦײሏႜᅃՉ঴ᅳك࿔ጴڦײႜᅃՉ঴ᅳك࿔ጴڦײ

Ⴞǈ࿢৽փ၎႑ేీࠕሏႜܠƽሏႜܠƽܠƽ

࿢ํሞભڥ૙ేăுٱǈ໚඗ຫኻᄲ๟ࢇڥ૙ేăுٱǈ໚඗ຫኻᄲ๟ࢇ૙ేăுٱǈ໚඗ຫኻᄲ๟ࢇ

߭ڦܾ৊዆پஓ৽ᅜሏႜǈփᅃۨ๟ᄲܾ৊዆پஓ৽ᅜሏႜǈփᅃۨ๟ᄲ৽ᅜሏႜǈփᅃۨ๟ᄲሏႜǈփᅃۨ๟ᄲǈփᅃۨ๟ᄲ

ՊᅳഗՊᅳઠڦǈڍํฉփࣷᆶට

෯ׯኄᄣڦăඟײႾᇵ኱থႀܾ৊዆پᇵ኱থႀܾ৊዆پ኱থႀܾ৊዆پܾ৊዆پ

ஓ৽ࡻၟᄲፇጎ໙ڦටጲڥፕ৽ࡻၟᄲፇጎ໙ڦටጲڥፕጎ໙ڦටጲڥፕ໙ڦටጲڥፕፕ

CPU

ᅃᄣă࣏ᆶǈేփᅜփᄲၲڥనڥనన

஺వདǛ

ৃྟڦࣆ༶ǖ

Պᅳഗᇑ

JVM

ኛՑຣԲডዘᄲǛ

Պᅳഗᇑ

Java

ႵెႵె

Ԩ߁౒

ే၄ሞڦ࿋ዃ4

ᆼփ๟ඇևጃ࠼࠼ƽ࿢࣏๟ࣷᅺྺᇜڟ

ٱဃૌ႙ڦຕ෗৊ຕፇዐܸփڥփಙૌ႙ڦຕ෗৊ຕፇዐܸփڥփಙڦຕ෗৊ຕፇዐܸփڥփಙಙ

ᅴ׉ǈժ൐ččǈժ൐čč

ǈړ඗ăڍ๟٪ൽ඄၌ڦҾඇ࿚༶఼Ǜ

࣏փ๟࿢ӝ࠲ǈܸేኻփࡗ๟ፕၵՔۅ

ޙࡽڦֱӡକă࣏ኈႇႇేӝኄၵ࿚༶

ାߴ࿢఼ă఼ăă

ໜేሹ஺ຫă࿢ᄺڥፔ၎ཞڦ๚൧ǈඓԍፔ၎ཞڦ๚൧ǈඓԍ၎ཞڦ๚൧ǈඓԍ

փࣷᆶටሞኴႜമႪ߀ܾ৊዆پஓăܾ৊዆پஓăă

ǈڪᅃူᄲփᄲඁ׺ၪᅁǛǈڪᅃူᄲփᄲඁ׺ၪᅁǛڪᅃူᄲփᄲඁ׺ၪᅁǛ

࣏ڥ

Java

๟߲ഽૌ႙ڦᇕჾ஘ǈኄپ՗ഽૌ႙ڦᇕჾ஘ǈኄپ՗ڦᇕჾ஘ǈኄپ՗

࿢փీඹႹՎଉԍ٪ૌ႙ڦຕăኄ๟࢔ૌ႙ڦຕăኄ๟࢔ڦຕăኄ๟࢔

࠲ڦૌ႙ҾඇႠࠀీǈ࿢ీࠕඟٷևڦૌ႙ҾඇႠࠀీǈ࿢ీࠕඟٷևҾඇႠࠀీǈ࿢ీࠕඟٷև

ݴڦٱဃሞڟేఫՉኮമ৽ԥጃڟă࣏

ᆶčč

ு૝ஸǈ՚ٶ܏࿢ຫࣆččǈ๟ᆶၵຕ

ૌ႙ڦٱဃࣷሞሏႜ้݀ิǈڍኄᄺ๟ڦٱဃࣷሞሏႜ้݀ิǈڍኄᄺ๟ሏႜ้݀ิǈڍኄᄺ๟݀ิǈڍኄᄺ๟

ྺକᄲඹႹۯༀӿۨኄᄣڦࠀీă

Java

ۯༀӿۨኄᄣڦࠀీă

Java

ኄᄣڦࠀీă

Java



ᅜሞኴႜ೺ᆅᆩ૶ײႾᇵᄺுᆶᇨ೺ࣷಸᇵᄺுᆶᇨ೺ࣷಸᄺுᆶᇨ೺ࣷಸ

ڟڦૌ႙ǈ໯ᅜ࿢ڥାᅃၵሏᆩႠă࿢ڦૌ႙ǈ໯ᅜ࿢ڥାᅃၵሏᆩႠă࿢ڦǈ໯ᅜ࿢ڥାᅃၵሏᆩႠă࿢ڦሏᆩႠă࿢ڦႠă࿢ڦ

߾ፕ৽๟ᄲඓԍཎۨփీಞڦ۫ဇփࣷࡗ

࠲ăཚ׉࿢ࣷጃڥڟٱဃǈ૩සຫӝ࿔ጴ

ጴޙزأᅜగ߲ຕጴኄዖ࿚༶৽ࣷԥ࿢݀

၄ă

ܔփഐǈٷۼኪڢ࿢֍๟Ҿඇڦڼᅃ

၍ă࿢ߑߑຫڦຕૌ႙ٱဃසࡕுᆶتૌ႙ٱဃසࡕுᆶتٱဃසࡕுᆶت

૙ࡻ๟ᅃ߲୑۴఼ăၟ๟ྵݒۙᆩ

pri-

୑۴఼ăၟ๟ྵݒۙᆩ

pri-

఼ăၟ๟ྵݒۙᆩ

pri-

ۙᆩ

pri-pri-

vate

ݛ݆ڦײႾڪᄺ๟ᆯ࿢ֱڦă࿢ీݛ݆ڦײႾڪᄺ๟ᆯ࿢ֱڦă࿢ీڦײႾڪᄺ๟ᆯ࿢ֱڦă࿢ీ

ࠕݞኹට்ۯڟփᅜಸڦײႾپஓᇑഄ

໱ૌڦዘᄲຕăසࡕᄲӝ࿢ڦࠀీຫྜڦዘᄲຕăසࡕᄲӝ࿢ڦࠀీຫྜ

ీᄲຫڟཀଋă

๟ઞǈසࡕுᆶ࿢ڔዿฉຎڦ࿚༶ǈే઻ຎڦ࿚༶ǈే઻ڦ࿚༶ǈే઻

ራ৽ࠬۖକăு้କǈူ࣮ምຫӕă

Java

ႵెႵె Պᅳഗ

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