JAVA应用小程序.doc

文档介绍：1、TestBirthday:
public class TestBirthday{
public static void main(String args[]){
Birthday obj1=new Birthday();
();

Birthday obj2=new Birthday(1990,11,12);
();
}
}
class Birthday {
int year,month,day;//分别表示年月日

Birthday(){
}
Birthday(int year,int month,int day){
=year;
=month;
=day;
}
void show(){
("出生年月:"+year+"年"+month+"月"+day+"日");
}
}
2、TestFrame:
import .*;
import .*;
public class TestFrame extends JFrame{
JTextArea text;

public TestFrame(String s){
super(s);
Container contentPane=getContentPane();
(new BorderLayout());
text=new JTextArea("这是一个文本区,用来输入文本。");
(text,);

Toolkit tk=getToolkit();
Image img=("picl\\");
setIconImage(img);
setSize(400,300);
setVisible(true);
}

public static void main(String[] args){
TestFrame w=new TestFrame("我的窗口应用程序");
}
}
3、二维数组:
public class TwoDimensionArray{
public static void main(String args[]){

int b[][]={{1,2,3},{4,5,6,7,8},{9,10,11,12,13,14,15}};
for(int i=0;i<;i++){//
("第"+(i+1)+"行的所有元素:");
for(int j=0;j<b[i].length;j++){//
(b[i][j]+"\t");
}
();//
}

int sum=0;
for(int i=0;i<;i++){
for(int j=0;j<b[i