Java 中 Character.isValidCodePoint()方法，带示例
原文:https://www . geesforgeks . org/character-is validacodepoint-method-in-Java-with-examples/
character . isvalidacodepoint()是 java 中的一个内置方法，用于确定参数中提到的指定代码点是否是有效的 Unicode 代码点值。
语法:
public static boolean isValidCodePoint(int codePoint)
参数:参数码点为整数数据类型，指待测试的 unicode 码点。
返回值:如果指定的代码点值在最小代码点和最大代码点之间，则该方法返回真，否则返回假。
以下程序说明了 Character.isValidCodePoint()方法的使用: 程序 1:
// Java program to demonstrate the
// Character.isValidCodePoint() method
import java.lang.*;
public class gfg {
public static void main(String[] args)
{
// Create 2 int primitives c1, c2 and assign values
int c1 = 0x0125, c2 = 0x123fff;
boolean bool1 = Character.isValidCodePoint(c1);
boolean bool2 = Character.isValidCodePoint(c2);
String str1 = "c1 is a valid Unicode code point is " + bool1;
String str2 = "c2 is a valid Unicode code point is " + bool2;
// Print bool1, bool2 values
System.out.println(str1);
System.out.println(str2);
}
}
Output:
c1 is a valid Unicode code point is true
c2 is a valid Unicode code point is false
程序 2:
// Java program to demonstrate the
// Character.isValidCodePoint() method
import java.lang.*;
public class gfg {
public static void main(String[] args)
{
// Create 2 int primitives c1, c2 and assign values
int c1 = 0x0128, c2 = 0x123ddd;
boolean bool1 = Character.isValidCodePoint(c1);
boolean bool2 = Character.isValidCodePoint(c2);
String str1 = "c1 is a valid Unicode code point is " + bool1;
String str2 = "c2 is a valid Unicode code point is " + bool2;
// Print bool1, bool2 values
System.out.println(str1);
System.out.println(str2);
}
}
Output:
c1 is a valid Unicode code point is true
c2 is a valid Unicode code point is false
参考:https://docs . Oracle . com/javase/7/docs/API/Java/lang/character . html # isvalidacodepoint(int)
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