附我的程序: import java.awt.*; import java.applet.*; public class Cc extends Applet {
public void init() { } public void paint(Graphics g) { g.drawString("Welcome to Java!!", 50, 60 ); } } D:\j2sdk1.4.2_01\src.zip(java/applet/Applet.java):33: class Applet is public, should be declared in a file named Applet.java (source unavailable) D:\j2sdk1.4.2_01\src.zip(java/awt/image/ColorModel.java):138: class ColorModel is public, should be declared in a file named ColorModel.java (source unavailable) D:\j2sdk1.4.2_01\src.zip(java/io/IOException.java):22: class IOException is public, should be declared in a file named IOException.java (source unavailable) D:\j2sdk1.4.2_01\src.zip(java/io/ObjectInputStream.java):166: class ObjectInputStream is public, should be declared in a file named ObjectInputStream.java (source unavailable) D:\j2sdk1.4.2_01\src.zip(java/net/URL.java):94: class URL is public, should be declared in a file named URL.java错误竟然有这么多:
import java.awt.*;
import java.applet.*;
public class Cc extends Applet {
public void init() {
} public void paint(Graphics g) {
g.drawString("Welcome to Java!!", 50, 60 );
}
}
D:\j2sdk1.4.2_01\src.zip(java/applet/Applet.java):33: class Applet is public, should be declared in a file named Applet.java
(source unavailable)
D:\j2sdk1.4.2_01\src.zip(java/awt/image/ColorModel.java):138: class ColorModel is public, should be declared in a file named ColorModel.java
(source unavailable)
D:\j2sdk1.4.2_01\src.zip(java/io/IOException.java):22: class IOException is public, should be declared in a file named IOException.java
(source unavailable)
D:\j2sdk1.4.2_01\src.zip(java/io/ObjectInputStream.java):166: class ObjectInputStream is public, should be declared in a file named ObjectInputStream.java
(source unavailable)
D:\j2sdk1.4.2_01\src.zip(java/net/URL.java):94: class URL is public, should be declared in a file named URL.java错误竟然有这么多:
将类名Cc改为文件名Applet,如下:import java.awt.*;
import java.applet.*;
public class Applet extends Applet {public void init() {
}public void paint(Graphics g) {
g.drawString("Welcome to Java!!", 50, 60 );
}
}
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另一种方法:
将文件名Applet.java改为类名Cc.java。
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总之要确保文件名和类名保持一致,这是java开发的规定。
就是:import java.awt.*;import java.applet.*;
你可以打开看的