Java中的System.out.format

Question

I'm trying to make a formatted output in Java but I'm having some trouble... I write for example:

System.out.format ("%d", 5);

but Eclipse underlines the word "format" and there is a marker at this line saying:

The method format(String, Object[]) in the type PrintStream is not applicable for the arguments (String, int).

Answer 1

Most likely the problem is that you are not using Java 1.5 or higher. Please check the version in your build. In Eclipse, this is:

• Right Click on the Project -> Build Path -> Configure Build Path
• Choose Libraries tab, click on JRE System Library then choose Edit
• Change your execution environment to one that is Java 1.5 or higher in the drop down.