EN
Java - Math.ceil() method example
0 points
The Math.ceil() function returns an integer value that is greater than or equal to the argument - the result of round-up operation.
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public class MathExample {2
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public static void main(String[] args) {4
System.out.println( Math.ceil( 5 ) ); // 5.05
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System.out.println( Math.ceil( 2.49 ) ); // 3.07
System.out.println( Math.ceil( 2.50 ) ); // 3.08
System.out.println( Math.ceil( 2.51 ) ); // 3.09
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System.out.println( Math.ceil( -2.49 ) ); // -2.011
System.out.println( Math.ceil( -2.50 ) ); // -2.012
System.out.println( Math.ceil( -2.51 ) ); // -2.013
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System.out.println( Math.ceil( 0.999 ) ); // 1.015
System.out.println( Math.ceil( 1.001 ) ); // 2.016
System.out.println( Math.ceil( -1.001 ) ); // -1.017
}18
}| Syntax |
xxxxxxxxxx1 package java.lang;2 3 public final class Math {4 5 public static double ceil(double number) { ... }6 7 }
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| Parameters | number - double value (primitive value). |
| Result |
Rounded up If input If input If input |
| Description | ceil is a static method that takes only one parameter and returns a rounded-up value. |
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public class CustomMath {2
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static double ceilPrecised(double number, int precision) {4
double power = Math.pow(10, precision);5
return Math.ceil(number * power) / power;6
}7
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public static void main(String[] args) {9
System.out.println( ceilPrecised( 5 , 0 ) ); // 5.010
System.out.println( ceilPrecised( 5. , 0 ) ); // 5.011
System.out.println( ceilPrecised( .5, 0 ) ); // 1.012
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System.out.println( ceilPrecised( 1.1234, 0 ) ); // 2.014
System.out.println( ceilPrecised( 1.1234, 1 ) ); // 1.215
System.out.println( ceilPrecised( 1.1235, 2 ) ); // 1.1316
System.out.println( ceilPrecised( 1.1235, 3 ) ); // 1.12417
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System.out.println( ceilPrecised( -1.1234, 0 ) ); // -1.019
System.out.println( ceilPrecised( -1.1234, 1 ) ); // -1.120
System.out.println( ceilPrecised( -1.1234, 2 ) ); // -1.1221
System.out.println( ceilPrecised( -1.1234, 3 ) ); // -1.12322
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System.out.println( ceilPrecised( 1234, -1 ) ); // 1240.024
System.out.println( ceilPrecised( 1234, -2 ) ); // 1300.025
System.out.println( ceilPrecised( 1234, -3 ) ); // 2000.026
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System.out.println( ceilPrecised( 5_000.000_001, 0 ) ); // 5001.028
System.out.println( ceilPrecised( 5_000.000_001, 6 ) ); // 5000.00000129
System.out.println( ceilPrecised( 5_000.000_001, -3 ) ); // 6000.030
}31
}