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Left pad a String with a specified character in Java
The following is our string −
String str = "Amit";
Now take a StringBuilder object −
StringBuilder strBuilder = new StringBuilder();
Set the character you want to pad with a string −
Character ch = '^';
Perform left padding and extend the string length to 5 (one for the additional character). The character that will be padded comes on the left −
while (strBuilder.length() + str.length() < 5) { strBuilder.append(ch); }
The following is an example −
Example
public class Demo { public static void main(String[] args) { String str = "Amit"; Character ch = '^'; StringBuilder strBuilder = new StringBuilder(); while (strBuilder.length() + str.length() < 5) { strBuilder.append(ch); } // append strBuilder.append(str); String res = strBuilder.toString(); System.out.println(res); } }
Output
^Amit
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