Format text using printf() method in java

printf method in java:

• Print() and println() methods are used to print text and object values or format data.
• In order to format text we also have printf() method in java
• Formatting data means displaying corresponding data type value. 
• For example when print float ot double value if we want to specify upto 2 decimal numbers we user.
• System.out.printf("%.2f", variable); 
• Also alignment of string data. when we are printing string data in java using print() and pintf() 

#1. Write a program to print string using print() and printf() methods

1. package printfinjava;
2. /**
3.  * How to format text using java printf() method
4.  * @author www.instanceofjava.com
5.  */
6.  
7. public class PrintfMethod {
8.  
9.     public static void main(String[] args) {
10.         String str="java printf double";
11.         
12.         System.out.println ("String is "+str);
13.         System.out.printf ("String is %s", str);
14.  
15.     }
16.  
17. }

Output:

1. String is java printf double
2. String is java printf double

java printf table

Format double using printf():

• We can format double using printf() method in java
• format double to 2 decimal places in java possible by using system.out.printf() method.

#2. Write a program to print double to 2 decimal places in java

1. package printfinjava;
2. /**
3.  * How to format text using java printf() method
4.  * @author www.instanceofjava.com
5.  */
6.  
7. public class PrintfMethod {
8.  
9. public static void main(String[] args) {
10.  
11.      double value=12.239344;
12.      System.out.printf("%.2f", value);
13.  
14. }
15.  
16. }

Output:

1. 12.24

#3. Write a program to format text using printf() method in java