Java的預設編碼

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  1.Java的預設編碼
內容:
1.Java的預設編碼 
java的src.zip包中的java.nio.charset.Charset類中defaultCharset()方法說明java的編碼類別型是有jvm的file.encoding參數決定的,如果未指定預設是UTF-8
/**
* Returns the default charset of this Java virtual machine.
*
* <p> The default charset is determined during virtual-machine startup and
* typically depends upon the locale and charset of the underlying
* operating system.
*
* @return A charset object for the default charset
*
* @since 1.5
*/
public static Charset defaultCharset() {
if (defaultCharset == null) {
synchronized (Charset.class) {
String csn = AccessController.doPrivileged(
new GetPropertyAction("file.encoding"));
Charset cs = lookup(csn);
if (cs != null)
defaultCharset = cs;
else
defaultCharset = forName("UTF-8");
}
}
return defaultCharset;
}

Java的預設編碼

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