Java Utililty Methods Double Number Truncate

List of utility methods to do Double Number Truncate

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Description

The list of methods to do Double Number Truncate are organized into topic(s).

Method

doubletruncate2decimals(double x)
truncatedecimals 
return Math.floor(x * 100) / 100;
StringtruncateDigits(double input, int numberDigits)
CODE EXAMPLE 
int indexDot = -1;
String integerPart = null, decimalPart = null, dot = ".";
String wholePart = null;
String result = null;
wholePart = input + "";
indexDot = (wholePart).indexOf(dot);
if (indexDot >= 0) {
    integerPart = wholePart.substring(0, indexDot);
...
String[][]truncateDigits(double[][] input, int numberDigits)
truncate Digits 
String[][] result = new String[input.length][];
int indexDot = -1;
String integerPart = null, decimalPart = null, dot = ".";
String wholePart = null;
for (int i = 0; i < input.length; i++) {
    result[i] = new String[input[i].length];
    for (int j = 0; j < input[i].length; j++) {
        System.out.println("input[" + i + "][" + j + "] = " + input[i][j]);
...
DoubletruncateDouble(final Double value)
Truncate the decimal part of a double to keep only 2 decimals. 
if (value == null) {
    return null;
return Double.valueOf(truncate(value));
doubletruncateDoubleDecimals(double x1, int num)
truncate Double Decimals 
double mult1 = Math.pow(10, num);
int mult = (int) mult1;
double y1;
double y2;
if (x1 > 0) {
    y1 = Math.floor(x1 * mult);
    y2 = y1 / (mult);
} else {
...
inttruncateDoubleToInt(double p_76140_0_)
returns par0 cast as an int, and no greater than Integer.MAX_VALUE-1024 
return (int) (p_76140_0_ + 1024.0D) - 1024;
inttruncateDoubleToInt(double x)
truncate Double To Int 
return (int) Math.floor(x);
double[]truncateNaN(double[] values)
truncates the given array by removing all fields at the end that contain the given value, e.g., {0,1,0,2,3,0,0} => {0,1,0,2,3} for value=0 
if (!Double.isNaN(values[values.length - 1])) {
    return values;
int index = values.length - 1;
for (int i = values.length - 1; i >= 0; i--) {
    if (!Double.isNaN(values[i])) {
        break;
    index--;
double[] valuesNew = new double[index + 1];
System.arraycopy(values, 0, valuesNew, 0, index + 1);
return valuesNew;
StringtruncateNoSciNotation(double d, int decimals)
truncate No Sci Notation 
return String.format("%." + decimals + "f", d);
double[][]truncateRows(double[][] matrix, int nCols)
copy only first nCols of matrix 
final int nRows = matrix.length;
final double[][] result = new double[nRows][nCols];
for (int row = 0; row < nRows; row++) {
    System.arraycopy(matrix[row], 0, result[row], 0, nCols);
return result;