class Hello{public static void main(String[] args){System.out.println("HelloWorld!");}} 这是程序
现在又出现这样错误 God!!!!!!!!! java.lang.IllegalAccessException: Class sun.applet.AppletPanel can not access a member of class hello with modifiers "" at sun.reflect.Reflection.ensureMemberAccess(Reflection.java:57) at java.lang.Class.newInstance0(Class.java:302) at java.lang.Class.newInstance(Class.java:261) at sun.applet.AppletPanel.createApplet(AppletPanel.java:617) at sun.applet.AppletPanel.runLoader(AppletPanel.java:546) at sun.applet.AppletPanel.run(AppletPanel.java:298) at java.lang.Thread.run(Thread.java:534) 载入:hello.class 不是 public 对象或没有公共构造函数。
package hello;//添加 class Hello{//你的类名是Hello,不是hello,怎么会出现hello.class?public static void main(String[] args){System.out.println("HelloWorld!");}}
public class Hello{//你的类名是Hello,不是hello,怎么会出现hello.class?
public class Hello{//添加public
照你上面 还是有错~ java.lang.NoClassDefFoundError: hello (wrong name: hello/hello) at java.lang.ClassLoader.defineClass0(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:537) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123) at sun.applet.AppletClassLoader.findClass(AppletClassLoader.java:157) at java.lang.ClassLoader.loadClass(ClassLoader.java:289) at sun.applet.AppletClassLoader.loadClass(AppletClassLoader.java:123) at java.lang.ClassLoader.loadClass(ClassLoader.java:235) at sun.applet.AppletClassLoader.loadCode(AppletClassLoader.java:561) at sun.applet.AppletPanel.createApplet(AppletPanel.java:617) at sun.applet.AppletPanel.runLoader(AppletPanel.java:546) at sun.applet.AppletPanel.run(AppletPanel.java:298) at java.lang.Thread.run(Thread.java:534)
可能你的存盘的文件名是hello.java,应该存为Hello.java
你是用jdk编译和执行的吗?
程序改成这样 public class hello{public static void main(String[] args){System.out.println("HelloWorld!");}} 错误少了点 java.lang.ClassCastException at sun.applet.AppletPanel.createApplet(AppletPanel.java:617) at sun.applet.AppletPanel.runLoader(AppletPanel.java:546) at sun.applet.AppletPanel.run(AppletPanel.java:298) at java.lang.Thread.run(Thread.java:534)
这是程序
java.lang.IllegalAccessException: Class sun.applet.AppletPanel can not access a member of class hello with modifiers ""
at sun.reflect.Reflection.ensureMemberAccess(Reflection.java:57)
at java.lang.Class.newInstance0(Class.java:302)
at java.lang.Class.newInstance(Class.java:261)
at sun.applet.AppletPanel.createApplet(AppletPanel.java:617)
at sun.applet.AppletPanel.runLoader(AppletPanel.java:546)
at sun.applet.AppletPanel.run(AppletPanel.java:298)
at java.lang.Thread.run(Thread.java:534)
载入:hello.class 不是 public 对象或没有公共构造函数。
class Hello{//你的类名是Hello,不是hello,怎么会出现hello.class?public static void main(String[] args){System.out.println("HelloWorld!");}}
java.lang.NoClassDefFoundError: hello (wrong name: hello/hello)
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:537)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
at sun.applet.AppletClassLoader.findClass(AppletClassLoader.java:157)
at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
at sun.applet.AppletClassLoader.loadClass(AppletClassLoader.java:123)
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
at sun.applet.AppletClassLoader.loadCode(AppletClassLoader.java:561)
at sun.applet.AppletPanel.createApplet(AppletPanel.java:617)
at sun.applet.AppletPanel.runLoader(AppletPanel.java:546)
at sun.applet.AppletPanel.run(AppletPanel.java:298)
at java.lang.Thread.run(Thread.java:534)
public class hello{public static void main(String[] args){System.out.println("HelloWorld!");}}
错误少了点
java.lang.ClassCastException
at sun.applet.AppletPanel.createApplet(AppletPanel.java:617)
at sun.applet.AppletPanel.runLoader(AppletPanel.java:546)
at sun.applet.AppletPanel.run(AppletPanel.java:298)
at java.lang.Thread.run(Thread.java:534)
JDK1.4.2_04 NetBeans我没有用过,请问这个东东它的编译和javac有什么不同
.;F:\java然后在程序里import hello.hello.class