Java.io.PrintStream.format() Method Example
[Pages:2]JAVA.IO.PRINTSTREAM.FORMAT METHOD
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Description
The java.io.PrintStream.format method writes a formatted string to this output stream using the specified format string and arguments.
Declaration
Following is the declaration for java.io.PrintStream.format method.
public PrintStream format(Locale l,String format,Object... args)
Parameters
l -- The locale to apply during formatting. If l is null then no localization is applied. format -- A format string as described in Format string syntax args -- Arguments referenced by the format specifiers in the format string. If there are more arguments than format specifiers, the extra arguments are ignored. The number of arguments is variable and may be zero. The maximum number of arguments is limited by the maximum dimension of a Java array as defined by the Java Virtual Machine Specification. The behaviour on a null argument depends on the conversion.
Return Value
This method returns this output stream
Exception
IllegalFormatExceptio -- If a format string contains an illegal syntax, a format specifier that is incompatible with the given arguments, insufficient arguments given the format string, or other illegal conditions. For specification of all possible formatting errors, see the Details section of the formatter class specification. NullPointerException -- If the format is null
Example
The following example shows the usage of java.io.PrintStream.format method.
package com.tutorialspoint; import java.io.*; import java.util.Locale; public class PrintStreamDemo {
public static void main(String[] args) { String s = "Hello World"; // create printstream object PrintStream ps = new PrintStream(System.out); // format a string ps.format(Locale.UK, "This is a %s program", s); // flush to see the string ps.flush();
}
} Let us compile and run the above program, this will produce the following result: This is a Hello World program
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