Java basics - Sting format

String Formatting

Most common way of formatting a string in java is using String.format(). If there were a “java sprintf” then this would be it.

String output = String.format("%s = %d", "joe", 35);

For formatted console output, you can use printf() or the format() method of System.out and System.err PrintStreams.

System.out.printf("My name is: %s%n", "joe");

Create a Formatter and link it to a StringBuilder. Output formatted using the format() method will be appended to the StringBuilder.

StringBuilder sbuf = new StringBuilder();

Formatter fmt = new Formatter(sbuf);

fmt.format("PI = %f%n", Math.PI);

System.out.print(sbuf.toString());

// you can continue to append data to sbuf here.

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