java's Introduction
java's People
java's Issues
file encoding에 따른 compile error
에러메세지
StandardOutput.java:14: error: unmappable character (0xEB) for encoding x-windows-949 System.out.println("?몴以?異쒕젰硫붿냼?뱶"); ^
에러분석
해당 에러는 utf-8로 인코딩된 코드를 자바 컴파일러에서 한글 윈도우의 기본 인코딩을 따라서 ms949 방식으로 읽으려고 시도 했지만 실패했기때문에 발생
해결방법
javac 컴파일 옵션에 encoding을 명시
C:\Temp>javac StandardOutput.java -encoding UTF-8
java package와 java.lang.ClassNotFoundException
에러메세지
C:\Users\yechan\Desktop\study\java\basic\bank\bin\javabank>java javabank.Account Error: Could not find or load main class javabank.Account Caused by: java.lang.ClassNotFoundException: javabank.Account
에러분석 및 해결
해당 클래스를 찾지못해 발생한 Exception. 실제 문제의 원인은 잘못된 디렉토리에서 byte코드를 수행시키려함. bin 위치에서 위와같이 수행시 정상적으로 동작함
src와 bin 디렉토리를 별도 둔 상황에서 package를 명시한 java code를 아래와 같이 컴파일하면, bin 디렉토리 하위에 패키지로 이름으로 서브 디렉터리가 생성이 되고 그 하위에 클래스파일이 생성이됨. 이때 컴파일된 클래스의 FQCN(Fully Qualified Class Name)은 javabank.Account이다.
C:\Users\yechan\Desktop\study\java\basic\bank\src\javabank>javac -d ..\..\bin Account.java -encoding UTF8
관련 source code
package javabank;
public class Account {
private String accountNo;
private long balance;
public void deposit(long amount) { // deposit 예금하다
balance = balance + amount;
}
public void withdraw(long amount) { // balance 계좌잔고
balance = balance - amount;
}
public long getBalance() {
return balance;
}
public static void main(String[] args) {
System.out.println("패키지 테스트");
}
}
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.