public static void main(String[] args) { Person p2=new Person("张三",20);Person p1=new Person("张三",20);System.out.println(p1.compare(p2)?"相等":"不是相等");} main 写错了main拼写错了。仔细检查。。其实错误提示得很清晰明白你把main写成mian了你的文件名是JavaDemo01吗？文件...
public static void main(String[] args) or a JavaFX application class must extend javafx.application.Application Error: Main method not found in the file, please define the main method as: public static void main(String[] args) Error: Main method is not static in class MyClass, please define...
Caused by:java.lang.ClassNotFoundException:io.swagger.v3.core.util.ObjectMapperFactory at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)at java.base/java.lang.ClassL...
在命令行中执行以下代码: javaNoMainClass 1. 当你执行以上代码后,你应该会看到类似于以下的错误提示: Error: Main method not foundinclass NoMainClass, please define the main method as: public static void main(String[]args)or a JavaFX application class must extend javafx.application.Application 1. 2...
at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Unknown Source) at org.jetbrains.jps.builders.impl.java.JavacCompilerTool.createCompiler(JavacCompilerTool.java:70) at org.jetbrains.jps.javac.JavacMain.compile(JavacMain.java:63) ...
Exceptioninthread “main” java.lang.ClassCastException:com.Bcannot be cast to com.Cat com.ClassCastExceptionDemo.main(ClassCastExceptionDemo.java:23) Java代码将创建一个类和子类的层次结构。为了避免“ClassCastException”错误,请确保新类型属于正确的类或其父类之一。如果使用泛型,则编译代码时可能会捕获...
at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Unknown Source) at org.jetbrains.jps.builders.impl.java.JavacCompilerTool.createCompiler(JavacCompilerTool.java:70) at org.jetbrains.jps.javac.JavacMain.compile(JavacMain.java:63) ...
java.lang.ClassNotFoundException 找不到类异常。当应用试图根据字符串形式的类名构造类,而在遍历CLASSPAH之后找不到对应名称的class文件时,抛出该异常。 java.lang.CloneNotSupportedException 不支持克隆异常。当没有实现Cloneable接口或者不支持克隆方法时,调用其clone()方法则抛出该异常。
{ public static void main(String[] args) { TempClass t = new TempClass(); } ...
at java.lang.ClassLoader.loadClass(ClassLoader.java:425) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) ...3more 或 Exception in thread"main"java.lang.NoSuchFieldError: INSTANCE ...