java.lang.Character.isIdentifierIgnorable(int codePoint) 确定指定字符(Unicode代码点)应被视为一个可忽略的字符在Java标识符或Unicode标识符。

下面Unicode字符都忽略了Java标识符或Unicode标识符：

• 不是空白的ISO控制字符

  • 'u0000'  通过 'u0008'

  • 'u000E'  通过 'u001B'

  • 'u007F'  通过  'u009F'

• 具有格式FORMAT普通类值的所有字符

声明

以下是java.lang.Character.isIdentifierIgnorable()方法的声明

public static boolean isIdentifierIgnorable(int codePoint)

参数

• codePoint - the character (Unicode code point) to be tested

返回值

This method returns true if the character is an ignorable control character that may be part of a Java or Unicode identifier, false otherwise.

异常

• NA

例子

The following example shows the usage of lang.Character.isIdentifierIgnorable() method.

package com.yiibai;

import java.lang.*;

public class CharacterDemo {

   public static void main(String[] args) {

      // create 2 int primitives cp1, cp2
      int cp1, cp2;

      // assign values to cp1, cp2
      cp1 = 0x008f;
      cp2 = 0x0abc;

      // create 2 boolean primitives b1, b2
      boolean b1, b2;

      // assign isIdentifierIgnorable results of cp1, cp2 to b1, b2
      b1 = Character.isIdentifierIgnorable(cp1);
      b2 = Character.isIdentifierIgnorable(cp2);

      String str1 = "cp1 is an ignorable control character is "+b1;
      String str2 = "cp2 is an ignorable control character is "+b2;

      // print b1, b2 values
      System.out.println( str1 );
      System.out.println( str2 );
   }
}

让我们来编译和运行上面的程序，这将产生以下结果：

cp1 is an ignorable control character is true
cp2 is an ignorable control character is false