How output single value in Excel template using jxls
Let’s look at an example of output to template a single value with information. We can take an example from previous article and modify it a little.
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Let’s look at an example of output to template a single value with information. We can take an example from previous article and modify it a little.
Read MoreUsing String.join method (from java 8)
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String[] array = new String[] { "a", "b", "c" }; String joined2 = String.join(",", array); |
Using simple for-loop expression
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StringBuilder sb = new StringBuilder(); for (String n : name) { if (sb.length() > 0) sb.append(','); sb.append("'").append(n).append("'"); } return sb.toString(); |
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Using java.util.formatter
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StringBuilder sb = new StringBuilder(); // Send all output to the Appendable object sb Formatter formatter = new Formatter(sb, Locale.US); // Explicit argument indices may be used to re-order output. formatter.format("%4$2s %3$2s %2$2s %1$2s", "a", "b", "c", "d") // -> " d c b a" // Optional locale as the first argument can be used to get // locale-specific formatting of numbers. The precision and width can be // given to round and align the value. formatter.format(Locale.FRANCE, "e = %+10.4f", Math.E); // -> "e = +2,7183" // The '(' numeric flag may be used to format negative numbers with // parentheses rather than a minus sign. Group separators are // automatically inserted. formatter.format("Amount gained or lost since last statement: $ %(,.2f", balanceDelta); // -> "Amount gained or lost since last statement: $ (6,217.58)" |
See the Formatter docs for other modifiers.
Read MoreHow to convert int to Integer in java. This is the most popular question asked on the forums. Here are 3 examples of how to do this.
Read MoreSuppose we have the following problem. User input some value, how to check that this value is a String is an integer: 1. Check by Exception
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public static void main(String[] args) { System.out.println("Is int? " + IsIntCheckByException("12")); } private static boolean IsIntCheckByException(String str) { try { Integer.parseInt(str); return true; } catch (NumberFormatException nfe) { return false; } } |
In this article, we’ll look at the String array convert to String. This can be useful for example to log query parameters.
Read MoreJxls is a small Java library to make generation of Excel reports easy. Jxls uses a special markup in Excel templates to define output formatting and data layout.
Read MoreLet’s assume we have a Java collection of Car objects that we want to output into Excel. The Car class may look like this
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public class Car { private String brand; private BigDecimal price; // ... constructors // ... getters/setters } |
To use Jxls to output …
Read MoreSuppose you have the string ‘qwe’ and you need to repeat string ‘n’ times. Here’s how to do it: Using java 8 stream api
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String newString = Collections.nCopies(3, "qwe").stream().collect(Collectors.joining("")); String newString = Stream.generate(() -> "qwe").limit(3).collect(Collectors.joining()); String newString = String.join("", Collections.nCopies(n, s)); |
Using String.format
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String s = "qwe"; int n = 3; //this line print 'qweqweqwe' String newString = String.format("%0" + n + "d", 0).replace("0", s); |
Let us examine …
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