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Add the Integer#decode method

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Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
This commit is contained in:
Johannes Schindelin 2013-10-25 13:26:12 -05:00
parent c1ec6020a6
commit d04cda30ca
1 changed files with 17 additions and 0 deletions
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17
classpath/java/lang/Integer.java
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@ -122,4 +122,21 @@ public final class Integer extends Number implements Comparable<Integer> {
public static int parseInt(String s, int radix) { public static int parseInt(String s, int radix) {
return (int) Long.parseLong(s, radix); return (int) Long.parseLong(s, radix);
} }
public static Integer decode(String string) {
if (string.startsWith("-")) {
if (string.startsWith("-0") || string.startsWith("-#")) {
return new Integer(-decode(string.substring(1)));
}
} else if (string.startsWith("0")) {
char c = string.length() < 2 ? (char)-1 : string.charAt(1);
if (c == 'x' || c == 'X') {
return new Integer(parseInt(string.substring(2), 0x10));
}
return new Integer(parseInt(string, 010));
} else if (string.startsWith("#")) {
return new Integer(parseInt(string.substring(1), 0x10));
}
return new Integer(parseInt(string, 10));
}
} }