Java Bidi isRightToLeft()方法及示例

java.text.Bidi 类的 isRightToLeft() 方法是用来检查它是否有从右到左的线条和底层方向。

语法

public boolean isRightToLeft()

参数 ：这个方法不接受任何参数。
返回值： 如果这个bidi有从右到左的线和底层方向，这个方法返回 真 ，否则返回 假
以下是说明 isRightToLeft( )方法的例子：

例子1

// Java program to demonstrate// isRightToLeft() method import java.text.*;import java.util.*;import java.io.*; public class GFG {    public static void main(String[] argv)    {        // creating and initializing Bidi        // with base direction        Bidi bidi            = new Bidi(                "Geeks For Geeks",                Bidi.DIRECTION_LEFT_TO_RIGHT);         // checking both line and base direction        // using isRightToLeft() method        boolean status = bidi.isRightToLeft();         // display the result        if (status)            System.out.println(                "Both Line and Base "                + "direction is right to left");        else            System.out.println(                "Both Line and Base "                + "direction is not right to left");    }}

输出

Both Line and Base direction is not right to left 

例2 :

// Java program to demonstrate// isRightToLeft() method import java.text.*;import java.util.*;import java.io.*; public class GFG {    public static void main(String[] argv)    {        // creating and initializing        // AttributedString Object        AttributedString attr            = new AttributedString("GEEkS");         // adding attribute of language        // using addAttribute() method        attr.addAttribute(            AttributedCharacterIterator                .Attribute                .LANGUAGE,            new Locale("ar_QA"));         // creating and initializing Bidi        // with AttributedCharacterIterator        Bidi bidi = new Bidi(attr.getIterator());         // checking both line and base direction        // using isRightToLeft() method        boolean status = bidi.isRightToLeft();         // display the result        if (status)            System.out.println(                "Both Line and Base "                + "direction is right to left");        else            System.out.println(                "Both Line and Base "                + "direction is not right to left");    }}

输出

Both Line and Base direction is not right to left 

参考资料: https://docs.oracle.com/javase/9/docs/api/java/text/Bidi.html#isRightToLeft-