Java Utililty Methods Array Convert to

List of utility methods to do Array Convert to

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Description

The list of methods to do Array Convert to are organized into topic(s).

Method

StringconvertArrayToCSVString(String[] s)
convert Array To CSV String 
StringBuffer sb = new StringBuffer();
for (int i = 0; i < s.length; i++) {
    if (i > 0) {
        sb.append("|");
    sb.append(s[i]);
return sb.toString();
...
int[]convertArrayToInteger(String[] input)
convert Array To Integer 
int[] result = new int[input.length];
for (int i = 0; i < input.length; i++) {
    result[i] = Integer.parseInt(input[i].trim());
return result;
StringconvertArrayToLine(String[] cols)
Create a single line of CSV file. 
StringBuilder buf = new StringBuilder();
for (int i = 0; i < cols.length; i++) {
    if (i > 0) {
        buf.append(",");
    if (cols[i].length() > 0) {
        buf.append("\"");
        buf.append(cols[i].replace("\"", "\"\""));
...
intconvertArrayType(String type)
convert Array Type 
switch (type) {
case "boolean[]": 
    return PG_TYPE_BOOLARRAY;
case "byte[]": 
case "short[]": 
    return PG_TYPE_INT2ARRAY;
case "integer[]": 
    return PG_TYPE_INT4ARRAY;
...
StringconvertArrayTypeName(final String typeName)
Converts an internal Java array type name ([Lblabla) to the a the format used by the expression matcher (blabla[]) 
int index = typeName.lastIndexOf('[');
if (index != -1) {
    StringBuffer arrayType = new StringBuffer();
    if (typeName.endsWith("I")) {
        arrayType.append("int");
    } else if (typeName.endsWith("J")) {
        arrayType.append("long");
    } else if (typeName.endsWith("S")) {
...
ObjectconvertArrayValue(Object value, Class type)
convert Array Value 
if (type.equals(String.class)) {
    return value.toString();
} else if (type.equals(Long.class)) {
    return ((Number) value).longValue();
} else if (type.equals(Double.class)) {
    return ((Number) value).doubleValue();
} else {
    return value;
...
double[]toDoubleArray(byte[] data)
Convenience method for creating a double array from a byte array. 
double[] result = new double[data.length / 8];
byte[] tmp = new byte[8];
for (int i = 0; i < result.length; i++) {
    System.arraycopy(data, i * 8, tmp, 0, 8);
    result[i] = toDouble(tmp);
return result;
double[]toDoubleArray(Double[] list)
to Double Array 
double[] array = new double[list.length];
for (int i = 0; i < array.length; i++)
    array[i] = list[i];
return array;
double[]toDoubleArray(final int[] intArray)
to Double Array 
double[] array = null;
if (intArray != null) {
    array = new double[intArray.length];
    for (int i = 0; i < intArray.length; i++) {
        array[i] = (double) intArray[i];
return array;
...
float[]toFloatArray(final double[] doubles)
to Float Array 
final float[] floats = new float[doubles.length];
for (int i = 0; i < doubles.length; i++) {
    floats[i] = (float) doubles[i];
return floats;