Java2实用教程（第二版）程序代码——第一章 Java语言入门
1
//例子1
2public class Hello
3
{
4
public static void main (String args[ ])
5
{
6 System.out.println("你好，很高兴学习Java");
7
}
8
}
9
10//例子2
11public class people
12{
13 float hight,weight;
14 String head, ear, mouth;
15 void speak(String s)
16 {
17 System.out.println(s);
18 }
19}
20class A
21{ public static void main(String args[])
22 {people zhubajie;
23 zhubajie=new people();
24 zhubajie.weight=200f;
25 zhubajie.hight=1.70F;
26 zhubajie.head=“大头”;
27 zhubajie.ear="两只大耳朵";
28 zhubajie.mouth="一只大嘴";
29 System.out.println("重量"+zhubajie.weight+"身高" +zhubajie.hight);
30 System.out.println(zhubajie.head+zhubajie.mouth+zhubajie.ear);
31 zhubajie.speak("师傅，咱们别去西天了，改去月宫吧");
32 }
33}
34
35//例子3
36import java.applet.*;
37import java.awt.*;
38public class boy extends Applet
39{
40 public void paint(Graphics g)
41 {
42 g.setColor(Color.red);
43 g.drawString("我一边喝着咖啡，一边学Java呢",2,30);
44 g.setColor(Color.blue);
45 g.drawString("我学得很认真",10,50);
46 }
47}
48
//例子12
public class Hello3
{ 
4
public static void main (String args[ ])5
{ 
6
System.out.println("你好，很高兴学习Java");7
}8
}9
10
//例子211
public class people12
{13
float hight,weight; 14
String head, ear, mouth;15
void speak(String s)16
{ 17
System.out.println(s);18
}19
}20
class A21
{ public static void main(String args[])22
{people zhubajie;23
zhubajie=new people();24
zhubajie.weight=200f; 25
zhubajie.hight=1.70F;26
zhubajie.head=“大头”;27
zhubajie.ear="两只大耳朵";28
zhubajie.mouth="一只大嘴";29
System.out.println("重量"+zhubajie.weight+"身高" +zhubajie.hight);30
System.out.println(zhubajie.head+zhubajie.mouth+zhubajie.ear);31
zhubajie.speak("师傅，咱们别去西天了，改去月宫吧");32
}33
}34
35
//例子336
import java.applet.*; 37
import java.awt.*;38
public class boy extends Applet39
{ 40
public void paint(Graphics g)41
{42
g.setColor(Color.red); 43
g.drawString("我一边喝着咖啡，一边学Java呢",2,30);44
g.setColor(Color.blue);45
g.drawString("我学得很认真",10,50);46
}47
}48
