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Head First Java, Second Edition【中英对照】.pdf
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更新于2023-03-16
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Head First Java, Second Edition【中英对照】.pdf
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ႎቤব
1
Java
ڦ๘হ
1
Ԩ߁
Java
ټేႎଶᇘ
ă
ټేႎଶᇘ
ă
ٗᅃ๔৽ᅜᆷࡻڦᇕ݆Ă௬ၠܔၡĂ
ా٪࠶ࢅፌԀڦೝᅎኲႠઠဌᆅײႾᇵăႀᅃْ৽ᅜሞᆶں
ݛኴႜDŽ
write-once/run-anywhere
Džڦ༬ႠຶටକăႹܠටሞཨ
write-once/run-anywhere
Džڦ༬ႠຶටକăႹܠටሞཨDžڦ༬ႠຶටକăႹܠටሞཨ
ࢫ֍݀၄ᆶ
bug
ᄲأĂࠀీ၌ٷĂፌᄲంڦሏႜഐઠגƽփࡗኄۼ
bug
ᄲأĂࠀీ၌ٷĂፌᄲంڦሏႜഐઠגƽփࡗኄۼᄲأĂࠀీ၌ٷĂፌᄲంڦሏႜഐઠגƽփࡗኄۼ
৳ᅜമڦ๚൧କăසࡕే၄ሞ֍ߑ๔থة
Java
Ljఫే࣏ኈ႞ሏă၄
Java
Ljఫే࣏ኈ႞ሏă၄Ljఫే࣏ኈ႞ሏă၄
ሞڦ
Java
ᆼᆼᆶྰ૰ă
Java
ᆼᆼᆶྰ૰ăᆼᆼᆶྰ૰ă
ࡗઠҭLj
ޜڦƽ்ᅜ๔
ՊႀၵײႾĂՊᅳĂሏႜă்ࣷ༪ஃႀၵײႾĂՊᅳĂሏႜă்ࣷ༪ஃሏႜă்ࣷ༪ஃႜă்ࣷ༪ஃ
ᇕ݆Ăთ࣍Ăཉݴኧᅜକڟྺࢆཉݴኧᅜକڟྺࢆᅜକڟྺࢆ
Java
ኄăేகฉ৽ᅜ๔ႀײ
Ⴞକăକăă

2
ڼ
1
ቤ
You Bet
Shoot Me
Java
ڦ߾ፕݛ๕
source code for
the interactive
party invitation.
Method Party()
0 aload_0
1 invokespe-
cial #1 <Method
java.lang.Object()>
4 return
Պႀᇸپஓ࿔ă
ᇸپஓ
1
Պᅳഗ
Java
Ⴕె
DŽ
JVM
Dž
ڦణՔᄲඟేႀᅃ߲ᆌᆩײႾ
DŽ
ሞُ૩ዐᅃ߲ࢻ๕ಋܔᄥ
൩ࡧဣཥ
Dž
ీࠕሞేڦವᆷᆛᆶڦඪࢆยԢฉኴႜ
ă
ᆩՊᅳഗሏႜᇸپ
ஓăՊᅳഗֱࣷ
ٱဃLjසࡕᆶٱ৽
ᄲ߀ኟ֍ీׂิኟ
ඓڦă
2
Պᅳഗׂࣷጴব
ஓăඪࢆኧ
Java
ڦጎዃۼీࠕӝ
ገᅳׯኴႜڦా
ඹăՊᅳࢫڦጴব
ஓᇑೝ࠲ă
3
ేڦವᆷփࣷசᅃ
ኈኟڦ
Java
ഗLjڍ
்ۼࣷᆶ
Java
Ⴕె
DŽཚࡗํ၄Džăُ
Ⴕెᅜ܁ൽᇑኴႜ
ጴবஓă
4
Java
ڦ߾ፕݛ๕

Ԩ߁
3
ే၄ሞڦ࿋ዃ4
ేᄲፔڦ๚
import java.awt.*;
import java.awt.event.*;
class Party {
public void buildInvite() {
Frame f = new Frame();
Label l = new Label(“Party at Tim’s”);
Button b = new Button(“You bet”);
Button c = new Button(“Shoot me”);
Panel p = new Panel();
p.add(l);
} // more code here...
}
File Edit Window Help Plead
%javac Party.java
ኴႜ
javac
ײႾઠՊᅳ
Party.java
ăසࡕײႾ
ுᆶٱဃڦࣆLjׂࣷิ
Party.class
ኄ߲࿔ă
ՊᅳഗՊᅳઠڦኄ߲
࿔ᆯጴবஓፇׯ
ڦă
Պႀᇸپஓă
٪ྺ
Party.java
Method Party()
0 aload_0
1 invokespecial #1 <Method java.
lang.Object()>
4 return
Method void buildInvite()
0 new #2 <Class java.awt.Frame>
3 dup
4 invokespecial #3 <Method java.
awt.Frame()>
ഔۯ
Java
Ⴕె
DŽ
JVM
Džઠሏႜ
Party.class
࿔ă
JVM
ࣷጴবஓገ
࣑ׯೝీࠕ
ڦႚ๕ઠሏႜă
Պᅳׯپஓǖ
Party.class
File Edit Window Help Swear
%java Party
ᇸپஓ
1
Պᅳഗ
Java
Ⴕె
2
3
4
ేࣷՊႀᇸپஓ࿔
Lj
ᆩ
javac
ՊᅳײႾӝ࿔ႜՊ
ᅳ
Lj
ࢫሞగ߲
Java
ႵెฉኴႜՊᅳࡗڦጴবஓ
ă
DŽጀᅪǖኄᅃᄻփଁသ༶Ljڪᅃူ৽ࣷඟేՊႀ
ײႾLjڍ၄ሞփᆩLjኻᄲඟేኪڢઠୄඁஞăDž

4
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1
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Java
๏๏
Java
๏๏
Java 1.02
250
߲ૌ߲ૌ
ࡄ
ᆶҺڦ
logo
ࢅఁࢅఁఁ
LjݥᆶLjݥᆶLjᆶLjLj
ڍ
bug
ܠLjഄLjഄ
ዐ
applet
ዘۅă
applet
ዘۅă
Java 1.1
500
߲ૌ߲ૌ
ࠑ
ࠀీ߸ഽĂ߸ࡻᆩăᆩăă
๔ڟ࣌ᆓăԲডᇀᆓăԲডᇀăԲডᇀᇀ
݀ႚহ௬ăহ௬ăă
Java 2
(
ӲԨ
1.2
ċ
1.4)
ӲԨ
1.2
ċ
1.4) 1.2
ċ
1.4)
ċ
1.4)1.4)
2300 ߲ૌ
க
ሞ
Java
Քጚࡧຕዐڦૌ
(class)
ڦຕଉຕዐڦૌ
(class)
ڦຕଉዐڦૌ
(class)
ڦຕଉڦຕଉຕଉ
3500
3000
2500
2000
1500
1000
500
0
Java 5.0
(
ӲԨ
1.5
ᅜฉ
)
ӲԨ
1.5
ᅜฉ
)1.5
ᅜฉ
)
ᅜฉ
))
3500
߲ૌ߲ૌ
ഗටڪڦྰ૰
Lj
߸ඹഗටڪڦྰ૰
Lj
߸ඹڪڦྰ૰
Lj
߸ඹ
ᅟ݀
أକႎሺຕᅜഥڦૌኮૌኮኮ
ྔLj
Java 5.0
DŽᆼྺ
Tiger
Dž
࣏ܔᇕჾԨวፕକႹܠዘٷ
ڦ߀ՎLj๑ڥሞஃฉ߸
ඹᅟ๑ᆩLjժࡤᆶഄᇕჾࡤᆶഄᇕჾᇕჾ
ዐ࣌ᆓڦࠀీă࣌ᆓڦࠀీă
ᆶ้ᅜٳڟೝᇱ๔
(na-
๔
(na-(na-
tive)
܈ăᅜᆩઠກႀኟᆩઠກႀኟઠກႀኟກႀኟႀኟ
ࡀڦഓᄽᆌᆩײႾᅎڦഓᄽᆌᆩײႾᅎᅎ
ۯᆌᆩײႾăᆶ
3
ዖӲԨǖ
Micro Edition (J2ME)
Ă
Stan-
Ă
Stan-Stan-
dard Edition(J2SE)
ᅜ
Enter-
prise Edition (J2EE)
ă

Ԩ߁
5
ే၄ሞڦ࿋ዃ4
int size = 27;
String name = “Fido”;
Dog myDog = new Dog(name, size);
x = size - 5;
if (x < 15) myDog.bark(8);
while (x > 3) {
myDog.play();
}
int[] numList = {2,4,6,8};
System.out.print(“Hello”);
System.out.print(“Dog: “ + name);
String num = “8”;
int z = Integer.parseInt(num);
try {
readTheFile(“myFile.txt”);
}
catch(FileNotFoundException ex) {
System.out.print(“File not found.”);
}
ำᅃ߲ joufhfsૌ႙Ljఁྺtj{fڦՎଉժޯኵ38ᅃ߲!joufhfsૌ႙Ljఁྺtj{fڦՎଉժޯኵ38ૌ႙Ljఁྺtj{fڦՎଉժޯኵ38ఁྺtj{fڦՎଉժޯኵ38ޯኵ38ኵ38
֊֊ᅃႜײႾሞፔ๊Ǜ
(
ٴӄሞူᅃᄻ
)
Ljႀ
Java
ײႾ৽ኄ
ڇƽ
࿚ǖ
ሼঢ়ࡗ
Java 2
ࢅ
Java 5.0
Lj
ޏᆶ
Java
ࢅ
Java 5.0
Lj
ޏᆶ
JavaJava 5.0
Lj
ޏᆶ
Java
3
ࢅ
4
఼
Ǜ
ྺ๊
2
ுᆶၭຕۅ
Ǜ
ࢅ
4
఼
Ǜ
ྺ๊
2
ுᆶၭຕۅ
Ǜ
4
఼
Ǜ
ྺ๊
2
ுᆶၭຕۅ
Ǜ
ٴǖ
ߟၨڦૂ৽ሞᇀُLj
Java
ڦํӲԨၨڦૂ৽ሞᇀُLj
Java
ڦํӲԨڦૂ৽ሞᇀُLj
Java
ڦํӲԨᇀُLj
Java
ڦํӲԨُLj
Java
ڦํӲԨLj
Java
ڦํӲԨ
Java
ڦํӲԨڦํӲԨํӲԨ
ٗ
1.1
ླྀڟ
1.2
LjڍᅺՎࣅޗ܈ٷLjᅜၨևோۨླྀڟ
1.2
LjڍᅺՎࣅޗ܈ٷLjᅜၨևோۨڟ
1.2
LjڍᅺՎࣅޗ܈ٷLjᅜၨևோۨᅜၨևோۨၨևோۨևோۨևோۨ
ᆩඇႎڦంఁLjᇀంఁྺ
Java 2
ă
Java 3
4
ٗઠுᆶᇀంఁྺ
Java 2
ă
Java 3
4
ٗઠுᆶ
Java 2
ă
Java 3
4
ٗઠுᆶ
4
ٗઠுᆶ
4
ٗઠுᆶٗઠுᆶ
၄ࡗăڟକ
1.5
Ӳ้Ljၨևோᆼණྺօޗ܈ٷDŽٷևăڟକ
1.5
Ӳ้Ljၨևோᆼණྺօޗ܈ٷDŽٷևLjၨևோᆼණྺօޗ܈ٷDŽٷևၨևோᆼණྺօޗ܈ٷDŽٷևևோᆼණྺօޗ܈ٷDŽٷևևோᆼණྺօޗ܈ٷDŽٷևٷDŽٷևٷDŽٷև
ݴڦײႾᇵۼཞᅪኄຫDžܸႴᄲඇႎڦఁLjᅜᆼஶᇵۼཞᅪኄຫDžܸႴᄲඇႎڦఁLjᅜᆼஶۼཞᅪኄຫDžܸႴᄲඇႎڦఁLjᅜᆼஶ
ᅃ߲
Java 5.0
Ljᆩ
5
ܔᆌڟ
1.5
ăLjᆩ
5
ܔᆌڟ
1.5
ăᆩ
5
ܔᆌڟ
1.5
ă
ፌᇱ๔ڦ
Java
ӲԨ
Java
J1.02
DŽڼᅃْӲڦӲԨDžLjڦӲԨDžLjԨDžLj
1.02
ڟ
1.1
Ӳۼ໙Đ
Java
đă
1.2
Ă
1.3
ࢅ
1.4
ӲۼঢፔĐ
Java
ࢅ
1.4
ӲۼঢፔĐ
Java1.4
ӲۼঢፔĐ
Java
2
đăٗ
1.5
Ӳ๔ঢፔĐ
JavaG 5.0
đăే౾ܻᄺࣷ
ڟĐ
Java 5
đĐ
Tiger
DŽ݀پࡽDžđڦᆩ݆LjփኪڢLjփኪڢփኪڢ
ူᅃ߲ӲԨঢ๊ăঢ๊ăঢ๊ăă
Sharpen your pencil
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