Java String format() method

format() method returns a formatted String based on the given locale,specified format and arguments.

Syntax:

public static String format(String format , Object… args)

Parameter:

locale : It specifies locale value to be applied on the format() method.

format: It specifies the format of the output String

args : It specifies the number of arguments for the format String.It may be zero or more

Returns:

It returns a formatted String

Java String format() Example 1

public class JavaStringFormatEx1 {
    public static void main(String args[])
    {
        String s1 = "Tutorial And Example";
        // Concatenation of two strings
        String str1 = String.format("Welcome to %s", s1);
        // Output is given upto 11 decimal places
        String str2 = String.format("value is %.11f", 75.23456);
        System.out.println(str1);
        System.out.println(str2);
    }
}

Output:

Welcome to Tutorial And Example
value is 75.23456000000
value is 47.65734000

Java String format() Example 2

public class JavaStringFormatEx2
{ 
public static void main(String args[])
{ 
String s1="Nitish"; 
String f1=String.format("name is %s",s1); 
String f2=String.format("value is %f",54.15789); 
String f3=String.format("value is %54.15f",54.15789);
System.out.println(f1); 
System.out.println(f2); 
System.out.println(f3); 
  }
}

Output:

name is Nitish
value is 54.157890
value is 54.157890000000000

Java String format() Example 3

public class JavaStringFormatEx3 { 
    public static void main(String[] args) { 
        String s1 = String.format("%d", 101);          // Integer value
        String s2 = String.format("%f", 101.00);       // Float value
        String s3 = String.format("%x", 101);          // Hexadecimal value
        String s4 = String.format("%c", 'N');          // Char value 
        String s5 = String.format("%s", "Roy Nitish Nk"); // String value 
        System.out.println(s1); 
        System.out.println(s2); 
        System.out.println(s3); 
        System.out.println(s4); 
        System.out.println(s5); 
    } 
}

Output:

101101.
00000065
N
Roy Nitish Nk

Java String format() Example 4

public class JavaStringFormatEx4 { 
    public static void main(String[] args) {         
        String str1 = String.format("%d", 101); 
        String str2 = String.format("|%10d|", 101);  // Specifying length of integer 
        String str3 = String.format("|%-10d|", 101); // Left-justifying within the specified width 
        String str4 = String.format("|% d|", 101);  
        String str5 = String.format("|%010d|", 101); // Filling with zeroes 
        System.out.println(str1); 
        System.out.println(str2); 
        System.out.println(str3); 
        System.out.println(str4); 
        System.out.println(str5); 
    } 
}

Output:

101
101
101
101
0000000101