trim() / Reference / Processing.org

Name

trim()

Description

Removes whitespace characters from the beginning and end of a String. In addition to standard whitespace characters such as space, carriage return, and tab, this function also removes the Unicode "nbsp" (U+00A0) character and the zero width no-break space (U+FEFF) character.

Examples

Table table;

void setup() {

  table = new Table();

  table.addColumn("name");
  table.addColumn("type");

  TableRow newRow = table.addRow();
  newRow.setString("name", "   Lion");
  newRow.setString("type", "Mammal");

  newRow = table.addRow();
  newRow.setString("name", "Snake  ");
  newRow.setString("type", "Reptile");

  newRow = table.addRow();
  newRow.setString("name", "  Mosquito  ");
  newRow.setString("type", "Insect");
  
  println(table.getStringColumn("name"));
  
  table.trim();
  
  println(table.getStringColumn("name"));
}

// Sketch prints:
// [0] "   Lion"
// [1] "Snake  "
// [2] "  Mosquito  "
// [0] "Lion"
// [1] "Snake"
// [2] "Mosquito"

String s1 = "    Somerville MA ";
println(s1);  // Prints "    Somerville MA "
String s2 = trim(s1);
println(s2);  // Prints "Somerville MA"

String[] a1 = { " inconsistent ", " spacing" };  // Note spaces
String[] a2 = trim(a1);
printArray(a2);
// Prints the following array contents to the console:
// [0] "inconsistent"
// [1] "spacing"

Syntax

trim(str)
trim(array)

Parameters

str(String)any string
array(String[])a String array

Return

String or String[]

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