java??public class??class????
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public class HelloDemo{ //?????????????????????淶?????е???????????д
public static void main(String args[]){ //??????
System.out.println("HelloWorld!!!"); //????????????????
}
};
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???????????????′???(??????????Hello.java)
class HelloDemo{
public static void main(String args[]){
System.out.println("HelloWorld!!!");
}
};
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??????е???????????java Hello????????????javaHelloDemo
?????????*.java??????У?????????public class?????????????????ж??class??????
public class Hello{
public static void main(String args[]){
System.out.println("HelloWorld!!!");
}
};
class A{};
class B{};
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