看看这段代码错在哪?
import java.awt.*;public class Tanktext1 extends Frame {
public void longthframe(){
this.setLocation(300, 400);
this.setSize(800, 500);
setVisible(ture);
} public static void main(String[] args) {
Tanktext1 tr =new Tanktext1();
tr.longthframe(); }}
import java.awt.*;public class Tanktext1 extends Frame {
public void longthframe(){
this.setLocation(300, 400);
this.setSize(800, 500);
setVisible(ture);
} public static void main(String[] args) {
Tanktext1 tr =new Tanktext1();
tr.longthframe(); }}
import javax.swing.*;public class SimpleTest extends JFrame{ public SimpleTest(){
this.setLocation(300, 400);
this.setSize(800, 500);
setVisible(true);
} public static void main(String[] args) {
SimpleTest tr = new SimpleTest();
}
}