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Java Program to format a string
To format a string, use the String.format() method in Java. The following is an example that formats a string %s.
Example
public class Demo {
public static void main(String []args) {
String str = String.format("%s %s", "demo", "text");
System.out.print("String: "+str);
}
}Output
String: demo text
Left pad a string
To left pad a string, use the String.format and set the spaces.
String.format("|%20s|", "demotext")If you add 30 above, it will display the first string after 30 spaces from the beginning.
String.format("|%30s|", "demotext")The following is an example.
Example
public class Demo {
public static void main(String []args) {
System.out.print(String.format("|%20s|", "demotext"));
System.out.println("Left padded!");
}
}Output
| demotext|Left padded
Right pad a string
To right pad a string, use the String.format and set the spaces.
String.format("%1$-" + 20 + "s", "demotext"));If you add 30 above, it will display the next string after 30 spaces from the beginning.
String.format("%1$-" + 30 + "s", "demotext")The following is an example.
Example
public class Demo {
public static void main(String []args) {
System.out.print(String.format("%1$-" + 20 + "s", "demotext"));
System.out.println("Right padded!");
}
}Output
demotext Right padded!
Updated on: 27-Jun-2020
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