package applet;import java.applet.Applet;
import java.awt.Graphics;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.GregorianCalendar;public class showTime extends Applet{
private String message;
public void paint(Graphics g)
{
GregorianCalendar calendar = new GregorianCalendar();
Date date =calendar.getTime();
message = date.toString();
SimpleDateFormat s = new SimpleDateFormat("yyyy-MM-dd hh:mm");
//如何用SimpleDateFormat 格式化输出message
g.drawString(message, 20, 32);
try {
Thread.sleep(1000);
} catch (Exception e) {
System.out.println("数据异常请重试");
}
repaint();
}
}
import java.awt.Graphics;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.GregorianCalendar;public class showTime extends Applet{
private String message;
public void paint(Graphics g)
{
GregorianCalendar calendar = new GregorianCalendar();
Date date =calendar.getTime();
message = date.toString();
SimpleDateFormat s = new SimpleDateFormat("yyyy-MM-dd hh:mm");
//如何用SimpleDateFormat 格式化输出message
g.drawString(message, 20, 32);
try {
Thread.sleep(1000);
} catch (Exception e) {
System.out.println("数据异常请重试");
}
repaint();
}
}
就是这个程序想在paint()中加上SimpleDateFormat 这个类使用它格式化时间怎么做
import java.applet.Applet;
import java.awt.Graphics;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.GregorianCalendar;public class showTime extends Applet{
private String message;
public void paint(Graphics g)
{
GregorianCalendar calendar = new GregorianCalendar();
Date date =calendar.getTime();
message = date.toString();
g.drawString(message, 20, 32);
try {
Thread.sleep(1000);
} catch (Exception e) {
System.out.println("数据异常请重试");
}
repaint();
}
}
import java.awt.Graphics;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.GregorianCalendar;public class showTime extends Applet{private String message;public void paint(Graphics g)
{
GregorianCalendar calendar = new GregorianCalendar();
Date date =calendar.getTime();
message = date.toString();
SimpleDateFormat s = new SimpleDateFormat("yyyy-MM-dd hh:mm");
g.drawString(s.format(date), 20, 32);
try {
Thread.sleep(1000);
} catch (Exception e) {
System.out.println("数据异常请重试");
}
repaint();
}
}
package applet;import java.applet.Applet;
import java.awt.Graphics;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.GregorianCalendar;public class showTime extends Applet{private String message;public void paint(Graphics g)
{GregorianCalendar calendar = new GregorianCalendar();
Date date =calendar.getTime();
SimpleDateFormat s = new SimpleDateFormat("yyyy-MM-dd hh:mm");
message = s.format(date);
g.drawString(message, 20, 32);
try {
Thread.sleep(1000);
} catch (Exception e) {
System.out.println("数据异常请重试");
}
repaint();
}
}这样也可以,楼上的是不用message这个变量了。