Java 中 character . isunicodeidentifier part()方法，带示例
原文:https://www . geeksforgeeks . org/character-isunicodeidentifier part-method-in-Java-with-examples/
java . lang . character . isunicodeidentifier part()是 Java 中的一个内置方法，它确定指定的字符是否可能是 Unicode 标识符的一部分，而不是第一个字符。
当且仅当下列陈述之一为真时，字符可以是 Unicode 标识符的一部分:
- 它是一个连接标点符号(如“_”)
- 这是一个数字
- 这是一封信
- 这是一个组合标记
- 对于此字符，isIdentifierIgnorable 返回 true。
- 它是一个数字字母(如罗马数字字符)
- 这是一个无间距标记
语法:
public static boolean isUnicodeIdentifierPart(datatype character)
参数:该功能接受一个强制参数字符。该参数可以是数据类型 int 或 char。它指定要测试的字符。
返回值:如果字符可能是 Unicode 标识符的一部分，则该方法返回 true，否则返回 false。
下面的程序说明了 Java . lang . Character . isunicodeidentifier part()方法: 程序 1: 当传递的参数是一个字符时。
// Code to illustrate the Character.isUnicodeIdentifierPart()
import java.lang.*;
public class gfg {
public static void main(String[] args)
{
// Creating character primitives
char char1 = '-';
char char2 = '7';
char char3 = 'g';
boolean bool1 = Character.isUnicodeIdentifierPart(char1);
boolean bool2 = Character.isUnicodeIdentifierPart(char2);
boolean bool3 = Character.isUnicodeIdentifierPart(char3);
String str1 = " Is " + char1 + " a part of Unicode Identifier: " + bool1;
String str2 = " Is " + char2 + " a part of Unicode Identifier: " + bool2;
String str3 = " Is " + char3 + " a part of Unicode Identifier: " + bool3;
// Displaying the strings
System.out.println(str1);
System.out.println(str2);
System.out.println(str3);
}
}
Output:
Is - a part of Unicode Identifier: false
Is 7 a part of Unicode Identifier: true
Is g a part of Unicode Identifier: true
程序 2: 当传递的参数是字符时。
// Code to illustrate the Character.isUnicodeIdentifierPart()
import java.lang.*;
public class gfg {
public static void main(String[] args)
{
// Create 2 char primitives c1, c2
char c1 = '~', c2 = '8';
boolean bool1 = Character.isUnicodeIdentifierPart(c1);
boolean bool2 = Character.isUnicodeIdentifierPart(c2);
String str1 = c1 + " may be part of a Unicode identifier is " + bool1;
String str2 = c2 + " may be part of a Unicode identifier is " + bool2;
System.out.println(str1);
System.out.println(str2);
}
}
Output:
~ may be part of a Unicode identifier is false
8 may be part of a Unicode identifier is true
下面的程序说明了字符识别部分方法:
程序 1:
// Code to illustrate the Character.isUnicodeIdentifierPart(int codePoint)
import java.lang.*;
public class gfg {
public static void main(String[] args)
{
// Create 2 int primitives c1, c2
int c1 = 0x053d, c2 = 0x7840;
boolean bool1 = Character.isUnicodeIdentifierPart(c1);
boolean bool2 = Character.isUnicodeIdentifierPart(c2);
String str1 = "c1 may be part of a Unicode identifier is " + bool1;
String str2 = "c2 may be part of a Unicode identifier is " + bool2;
// Displaying the strings
System.out.println(str1);
System.out.println(str2);
}
}
Output:
c1 may be part of a Unicode identifier is true
c2 may be part of a Unicode identifier is true
程序 2:
// Code to illustrate the Character.isUnicodeIdentifierPart(int codePoint)
import java.lang.*;
public class gfg {
public static void main(String[] args)
{
// Creating 2 int primitives c1, c2
int c1 = 0x065d, c2 = 0x7885;
boolean bool1 = Character.isUnicodeIdentifierPart(c1);
boolean bool2 = Character.isUnicodeIdentifierPart(c2);
String str1 = "c1 may be part of a Unicode identifier is " + bool1;
String str2 = "c2 may be part of a Unicode identifier is " + bool2;
// Displaying the strings
System.out.println(str1);
System.out.println(str2);
}
}
Output:
c1 may be part of a Unicode identifier is true
c2 may be part of a Unicode identifier is true
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