Java PrintStream.printf(): Difference between revisions
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System.out.printf("%<b>''width''</b>s", ''number'') | System.out.printf("%<b>''width''</b>s", ''number'') | ||
The number will be converted to string and will be right justified, with the rest of the space willed with ' ', at the left. | |||
Revision as of 17:51, 29 August 2017
External
- Format string syntax https://docs.oracle.com/javase/8/docs/api/java/util/Formatter.html#syntax
- https://docs.oracle.com/javase/8/docs/api/java/io/PrintWriter.html#printf-java.lang.String-java.lang.Object...-
Internal
Overview
pw.printf("%s: %d", s, i);
System.out.printf("float: %2.2f\n",f);
Features
Leading Space Padding
This is useful when numbers with different lengths are required to be displayed aligned to the right.
Left-padding with spaces is achieved as follows:
System.out.printf("%widths", number)
The number will be converted to string and will be right justified, with the rest of the space willed with ' ', at the left.