I was wondering if someone can show me how to use the format method for Java Strings. For instance If I want the width of all my output to be the same For instance, Suppose I always want my output...

2016年1月17日 · In my java class we wrote a card program in which you choose a "secret card", and at the end it tells you what your secret card was. I am only having one issue, and that is formatting the output. A...

2010年4月30日 · Output in a table format in Java's System.out Asked 15 years, 4 months ago Modified 4 years, 8 months ago Viewed 329k times

2022年2月4日 · Is there a way to format a decimal as following: 100 -> "100" 100.1 -> "100.10" If it is a round number, omit the decimal part. Otherwise format with two decimal places.

How do you left pad an int with zeros when converting to a String in java? I'm basically looking to pad out integers up to 9999 with leading zeros (e.g. 1 = 0001).

2010年12月11日 · I was wondering if Java has some sort of class to help on output formatting. I know in C++, in iomanip, there is a method call setw. I was wondering if Java has something similar to this.

2010年3月29日 · You can use the printf method, like so: System.out.printf("%.2f", val); In short, the %.2f syntax tells Java to return your variable (val) with 2 decimal places (.2) in decimal representation of a floating-point number (f) from the start of the format specifier (%). There are other conversion characters you can use besides f: d: decimal integer o: octal integer e: …

Since Java 1.5 we can use the method java.lang.String.format (String, Object...) and use printf like format. The format string "%1$15s" do the job. Where 1$ indicates the argument index, s indicates that the argument is a String and 15 represents the minimal width of the String. Putting it all together: "%1$15s". For a general method we have: public static String …

2012年10月9日 · I'm having some problems formatting the decimals of a double. If I have a double value, e.g. 4.0, how do I format the decimals so that it's 4.00 instead?

You need to specify the minimum width of the field. String.format("%" + numberOfSpaces + "s", ""); Why do you want to generate a String of spaces of a certain length. If you want a column of this length with values then you can do: String.format("%" + numberOfSpaces + "s", "Hello"); which gives you numberOfSpaces-5 spaces followed by Hello. If you want Hello to appear on …