How to align in java

Multiple ways to align text or data in Java: Horizontal alignment: Left alignment: use %-n Placeholder right alignment: use %n$ Placeholder center alignment: use %n$s and add Vertical alignment of upper %n% placeholders: Can be implemented using HTML or third-party libraries Other options: Line separators (\n) Tabs (\t) Manually added spaces

How to Align in Java

In Java, there are many ways to align text, numbers, or any other type of data. Alignment refers to arranging text or numbers into horizontal or vertical lines so that they appear neat and consistent.

Horizontal alignment

• Left alignment (left-aligned): Use String.format()%-n placeholder for the method. Where n is the maximum width of the text, and excess content will be truncated.

  <code class="java">String text = "Hello World";
  System.out.printf("%-20s", text);  // 输出：Hello World        </code>

• Right-aligned (right-aligned): Use the String.format() method to account for %n$ Character. Where n is the maximum text width.

  <code class="java">String text = "Hello World";
  System.out.printf("%20$s", text);  // 输出：        Hello World</code>

• Centered alignment: Use the %n$s placeholder of the String.format() method, And add the %n% placeholder to specify the width of the text.

  <code class="java">String text = "Hello World";
  System.out.printf("%10$s%10$s", text);  // 输出：   Hello World   </code>

Vertical Alignment

For vertical alignment, Java has no built-in method. Vertical alignment can be achieved using HTML or other third-party libraries.

Other options

In addition to the above methods, you can also use the following options for alignment:

• Line separators: "\n" can be used to create new lines within text, which can help align different lines of text.
• Tabs: "\t" can be used to create horizontal tabs in text, which can help align text of different lengths.
• Spaces: Add space characters (" ") to manually align text. However, this approach may not be as robust, especially if text length varies.

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