round up to whole number java code example

Example 1: how to round up in java

int x = 3.14;

Math.round(x);
//Rounds to nearest int
Math.ceil(x);
//Rounds up to int
Math.floor(x);
//Rounds down to int

Example 2: java round up

double test = 0.01;
// rounds up to the next INTEGER
test = Math.ceil(test);  // 1.0


double test2 = 1.0;
// does not round if decimal is 0
test2 = Math.ceil(test2);  // 1.0