Exception in thread "main" java.lang.Error: Unresolved compilation problem [duplicate]

Question

I get

Exception in thread "main" java.lang.Error: Unresolved compilation problem

from this code:

public class Book2 {
    String title;
    String author;

    void show() {System.out.println(title+" "+ author);

    public Book2() {
        this("", "");
        System.out.println("생성자 호출됨");
    }

    public Book2(String title) {
        this(title, "작자미상");
    }

    public Book2(String title, String author) {
        this.title = title;
        this.author = author;
    }

    public static void main(String[] args) {
        Book2 littlePrince = new Book2("어린왕자", "생텍쥐페리");
        Book2 loveStroy = new Book2("춘향전");
        Book2 emptyBook = new Book2();
        loveStroy.show();
        // bible.show();
    }
  }
}

I do not know which part is the error.

Welcome to Stack Overflow! Other users marked your question for low quality and need for improvement. I re-worded/formatted your input to make it easier to read/understand. Please review my changes to ensure they reflect your intentions. But I think your question is still not answerable. You should edit your question now, to add missing details (see minimal reproducible example ). Feel free to drop me a comment in case you have further questions or feedback for me. — GhostCat
– GhostCat, Commented Oct 15, 2018 at 4:31
First of all: this exception means: you try to run code that didn't compile properly. And then you get that exception. So point 1: dont try to run your code, compile it first, and make sure you fix all error messages. — GhostCat
– GhostCat, Commented Oct 15, 2018 at 4:32

apatniv · Accepted Answer · 2018-10-15 01:27:24Z

1

There is also a syntax error here:

void show() {System.out.println(title+" "+ author);

You missed closing brace.

void show() {System.out.println(title+" "+ author);} 



(ins)-> javac Book2.java 
(ins)-> java Book2
생성자 호출됨
춘향전 작자미상

answered Oct 15, 2018 at 1:27

apatniv

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Comments

amar19 · Accepted Answer · 2018-10-15 01:18:12Z

0

Your code needs UTF-8 encoding checked, the error is because you are using default ASCII encoding.

Right click on your class file in eclipse --> go to properties --> Resource -->Text File endcoding at the bottom --> Select Other and choose UTF-8 from the dropdown.

If you are not using eclipse then while saving your java file save it with UTF-8 encoding.

The error will be gone. And you'll get the output as such -

생성자 호출됨 춘향전 작자미상

answered Oct 15, 2018 at 1:18

amar19

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2 Comments

GhostCat Over a year ago

The UTF8 stuff looks correct, but the code still wont compile: there is a syntax error in the code.

amar19 Over a year ago

@GhostCat Yes, you are right. He needs to first compile the code successfully.

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