public class Time {
public static void main(String[] args) {
// ı do it randomly date
int hour = (int) (Math.random() * 24);
int minute = (int) (Math.random() * 60);
int second = (int) (Math.random() * 100);
// calculate second
int calculate = 60 * (hour * 60) + (minute * 60) + second;
if (hour < 12) {
System.out.println(hour + ":" + minute + ":" + second + "am");
System.out.println(calculate);
} else {
System.out.println(hour + ":" + minute + ":" + second + "pm");
System.out.println(calculate);
}
int cal = ((calculate * 86400) / 100);
// error here
System.out.printf("Day pass: %" + cal);
}
}
输出
14:54:92pm
53732
Exception in thread "main" java.util.UnknownFormatConversionException: Conversion = '3'
at java.base/java.util.Formatter.parse(Formatter.java:2750)
at java.base/java.util.Formatter.format(Formatter.java:2671)
at java.base/java.io.PrintStream.format(PrintStream.java:1209)
at java.base/java.io.PrintStream.printf(PrintStream.java:1105)
at Time.main(Time.java:23)
1条答案
按热度按时间yhuiod9q1#
对于print tf方法中的整数,您应该在“%”之后加上“d”
更改
System.out.printf("Day pass: %" + cal);
转至
System.out.printf("Day pass: %d" + cal);