import java.applet.*; import java.awt.Graphics; public class first extends Applet { public void paint(Graphics g) { g.drawString("welcome to java programming!",25,30); } }
G:\Java\design>javac first.java first.java:1: cannot resolve symbol symbol : class Applet location: package lang import java.lang.Applet; ^ first.java:3: cannot resolve symbol symbol : class Applet location: class first public class first extends Applet ^ 不会看英文啊
import java.applet.Applet; import java.awt.Graphics;public class first extends Applet { public void paint(Graphics g) { g.drawString("welcome to java programming!",25,30); } } 这样再试试?
first.java:1: cannot resolve symbol : first.java:第1行: 不能识别符号 symbol : class Applet 符号: class Applet location: package lang 位于:packge lang import java.lang.Applet;这就是告诉你 在 java.lang这个包中找不到 Applet这个类 ^ first.java:3: cannot resolve symbol first.java:第3行:不能识别符号 symbol : class Applet 符号: class Applet location: class first 位置: class first public class first extends Applet 这个是告诉你它找不到extends 的Applet,你没有正确的import包它怎么能找得到如何import大家已经说了
import java.applet.*; import java.awt.Graphics; public class first extends Applet { public void paint(Graphics g) { g.drawString("welcome to java programming!",25,30); } }编APPLET小应用程序时,要用包import java.applet.*; 并且继承的方法没有satic声明的
任何一个Java Applet都必须从类java.applet.Applet或javax.swing.JApplet继承而来。所以在你的Applet源文件的开头一定要将java.applet.Applet或javax.swing.JApplet import进来,直接导入两个类或者导入它们所在的包都可以。以下是示例程序:// firstApplet.java // A first java Applet extends form java.applet.Applet.import java.applet.Applet; // or import java.applet.*; import java.awt.Graphics;public class firstApplet extends Applet { pubic void paint( Graphics g ) { g.drawString( "Hello,world!", 20, 20 ); } }-------------------------------------------------------// firstApplet2.java // A first java Applet extends from javax.swing.JApplet.import javax.swing.JApplet; // or import javax.swing.*; import java.awt.Graphics;public class firstApplet2 extends JApplet { pubic void paint( Graphics g ) { g.drawString( "Hello,world!", 20, 20 ); } }
import java.awt.Graphics;
public class first extends Applet
{
public void paint(Graphics g)
{
g.drawString("welcome to java programming!",25,30);
}
}
first.java:1: cannot resolve symbol
symbol : class Applet
location: package lang
import java.lang.Applet;
^
first.java:3: cannot resolve symbol
symbol : class Applet
location: class first
public class first extends Applet
^
不会看英文啊
import java.awt.Graphics;public class first extends Applet
{
public void paint(Graphics g)
{
g.drawString("welcome to java programming!",25,30);
}
}
这样再试试?
first.java:第1行: 不能识别符号
symbol : class Applet
符号: class Applet
location: package lang
位于:packge lang
import java.lang.Applet;这就是告诉你 在 java.lang这个包中找不到 Applet这个类
^
first.java:3: cannot resolve symbol
first.java:第3行:不能识别符号
symbol : class Applet
符号: class Applet
location: class first
位置: class first
public class first extends Applet
这个是告诉你它找不到extends 的Applet,你没有正确的import包它怎么能找得到如何import大家已经说了
搂主发了帖子就再没看吧
import java.awt.Graphics;
public class first extends Applet
{
public void paint(Graphics g)
{
g.drawString("welcome to java programming!",25,30);
}
}编APPLET小应用程序时,要用包import java.applet.*;
并且继承的方法没有satic声明的
任何一个Java Applet都必须从类java.applet.Applet或javax.swing.JApplet继承而来。所以在你的Applet源文件的开头一定要将java.applet.Applet或javax.swing.JApplet import进来,直接导入两个类或者导入它们所在的包都可以。以下是示例程序:// firstApplet.java
// A first java Applet extends form java.applet.Applet.import java.applet.Applet; // or import java.applet.*;
import java.awt.Graphics;public class firstApplet extends Applet
{
pubic void paint( Graphics g )
{
g.drawString( "Hello,world!", 20, 20 );
}
}-------------------------------------------------------// firstApplet2.java
// A first java Applet extends from javax.swing.JApplet.import javax.swing.JApplet; // or import javax.swing.*;
import java.awt.Graphics;public class firstApplet2 extends JApplet
{
pubic void paint( Graphics g )
{
g.drawString( "Hello,world!", 20, 20 );
}
}