Sytstem.out.format

[Mrinal Singhania]

Hi,

public class Test1 {
	public static void main(String[] args) {
		System.out.printf("%b",12.3);
		System.out.printf("%d",12.3);
	}
}

The first line prints "true", while the second throws an exception. I don't understand why? AFAIK, booleans are not equivalent to ints/doubles, in that true != 1 and false != 0 in java.

Can someone please explain.

Thanks.

[Henry Wong]

Take a look at the javadoc for the java.util.Formatter class, particularly the chart about the behavior for each type.

'b', 'B'
general
If the argument arg is null, then the result is "false". If arg is a boolean or Boolean, then the result is the string returned by String.valueOf(arg). Otherwise, the result is "true".

Henry

[Mrinal Singhania]

Henry Wong wrote:Take a look at the javadoc for the java.util.Formatter class, particularly the chart about the behavior for each type.

'b', 'B'
general
If the argument arg is null, then the result is "false". If arg is a boolean or Boolean, then the result is the string returned by String.valueOf(arg). Otherwise, the result is "true".

Henry

Hi Henry,

Thanks for the reply. And this solves my problem

Regards.