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| 6. 11. 1. 使用参数索引 |
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Normally, format specifiers and arguments are matched in order, from left to right. |
However, by using an argument index you can explicitly control which argument
a format specifier matches. |
An argument index immediately follows the % in a format specifier: n$,
where n is the index of the desired argument, beginning with 1. |
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import java.util.Formatter;
public class MainClass {
public static void main(String args[]) {
Formatter fmt = new Formatter();
fmt.format("%3$d %1$d %2$d", 10, 20, 30);
System.out.println(fmt);
}
}
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30 10 20 |
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