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import java.util.List;
 
public abstract class China {
 
    private String name;
 
	private String declaration;
 
	public China(String name, String declaration){
		this.declaration = declaration;
        this.name = name;
	}
 
	public String getDeclaration(){
		return this.declaration;
	}
}
 
public class RepublicOfChina extends China {
	public RepublicOfChina() {
		super("Taiwan (台灣)", "我們始終未接受「九二共識」，根本原因就是北京當局所定義的「九二共識」，其實就是「一個中國」、「一國兩制」。我要重申，台灣絕不會接受「一國兩制」，絕大多數台灣民意也堅決反對「一國兩制」，而這也是「台灣共識」。");
	}
}
 
public class PeoplesRepublicOfChina extends China {
	public PeoplesRepublicOfChina() {
		super("Kina (支那)", "我們鄭重倡議，在堅持「九二共識」、反對「台獨」的共同政治基礎上，兩岸各政黨、各界別推舉代表性人士，就兩岸關係和民族未來開展廣泛深入的民主協商，就推動兩岸關係和平發展達成制度性安排。");
	}
}
 
public class KMT extends China {
	public KMT() {
		super("KMT (歷史的眼淚)", "快跪下舔");
	}
}
 
public class StraitConsensus {
	public static void main(String[] args) {
		List<China> chinas = Arrays.asList(new PeoplesRepublicOfChina(), new RepublicOfChina(), new KMT());
		chinas.stream().map(c -> String.format("我們是%s, 我們的宣言是 [%s]", c.getName(), c.getDeclaration())).forEach(System.out::println);
    }
}

Main.java:3: error: class China is public, should be declared in a file named China.java
public abstract class China {
                ^
Main.java:19: error: class RepublicOfChina is public, should be declared in a file named RepublicOfChina.java
public class RepublicOfChina extends China {
       ^
Main.java:25: error: class PeoplesRepublicOfChina is public, should be declared in a file named PeoplesRepublicOfChina.java
public class PeoplesRepublicOfChina extends China {
       ^
Main.java:31: error: class KMT is public, should be declared in a file named KMT.java
public class KMT extends China {
       ^
Main.java:37: error: class StraitConsensus is public, should be declared in a file named StraitConsensus.java
public class StraitConsensus {
       ^
Main.java:39: error: cannot find symbol
		List<China> chinas = Arrays.asList(new PeoplesRepublicOfChina(), new RepublicOfChina(), new KMT());
		                     ^
  symbol:   variable Arrays
  location: class StraitConsensus
Main.java:40: error: cannot find symbol
		chinas.stream().map(c -> String.format("???%s, ?????? [%s]", c.getName(), c.getDeclaration())).forEach(System.out::println);
		                                                              ^
  symbol:   method getName()
  location: variable c of type China
7 errors

Standard output is empty