"Java test" 修訂間的差異
(新頁面: {{Infobox java project | name = Java Logger | logo = | paradigm = reflective, [[Object-oriented progra...) |
|||
行 78: | 行 78: | ||
This is a minimal [[Hello world program]] in Java with [[syntax highlighting]]: | This is a minimal [[Hello world program]] in Java with [[syntax highlighting]]: | ||
− | <source lang="java" | + | <source lang="java"> |
− | // Hello.java | + | // Hello.java |
public class Hello { | public class Hello { | ||
public static void main(String[] args) { | public static void main(String[] args) { | ||
System.out.println("Hello, world!"); | System.out.println("Hello, world!"); | ||
} | } | ||
− | } | + | } |
</source> | </source> | ||
[[Category:Java]] | [[Category:Java]] |
於 2008年5月16日 (五) 03:12 的最新修訂
Java Logger
Lava Logger offers ten standard logging levels; from highest (coarsest) to lowest (finest):
- EMERGENCY
- ALERT
- CRITICAL
- FATAL
- ERROR
- WARNING
- NOTICE
- INFO
- DEBUG
- TRACE
History
unknow
package ncu.cc.log;
public class Example {
private Logger logger;
public Example () {
logger = Logger.getLogger(this.getClass().getName());
logger.setLevel(Logger.LOG_DEBUG);
}
public void doSomething() throws Exception {
logger.error("%d Hello", 1234);
int list[] = new int[1];
try {
list[5] = 10;
} catch (Exception e) {
logger.fatal(e);
throw e;
}
}
public static void main(String[] args) {
Example ex = new Example ();
Logger logger = Logger.getLogger();
try {
ex.doSomething();
} catch (Exception e) {
logger.fatal(e);
}
try {
int x = 0;
x = 5 / x;
System.out.println (x);
} catch (Exception e) {
logger.error(e);
}
}
}
This is a minimal Hello world program in Java with syntax highlighting:
// Hello.java
public class Hello {
public static void main(String[] args) {
System.out.println("Hello, world!");
}
}