java Java 中 Character.isJavaIdentifierPart()方法，带示例

Java 中 Character.isJavaIdentifierPart()方法，带示例

原文:https://www . geeksforgeeks . org/character-isjavaidentifier part-method-in-Java-with-examples/

The Character.isJavaIdentifierPart(int codePoint) is an inbuilt method in java that determines if the specified character may be part of a Java identifier as other than the first character. A character may be a part of Java identifier if any of the following are true:
- 这是一封信
- 它是一个货币符号(如“{ content }”；)
- 它是一个连接标点符号(如“_”)
- 这是一个数字
- 它是一个数字字母(如罗马数字字符)
- 这是一个组合标记
- 这是一个无间距标记
- 对于字符，isIdentifierIgnorable 返回 true。
语法:

java public static boolean isJavaIdentifierPart(int codePoint)

参数:整数数据类型的参数码点是指要测试的字符(Unicode 码点)。

返回值:如果字符可能是 Java 标识符的一部分，Character 类的 isjavaidentifier part(int code point)方法返回 true 否则为假。

以下程序用于说明 character . isjavaidentifierpion(int code point)方法: 程序 1:

```java // Java program to illustrate // Character.isJavaIdentifierPart() method import java.lang.*;

public class gfg {

public static void main(String[] args)     {

// Create 2 int primitives c1, c2         int c1 = 0x01f2, c2 = 0x78c0;

// Assign isJavaIdentifierPart results of c1, c2         // to boolean primitives bool1, bool2         boolean bool1 = Character.isJavaIdentifierPart(c1);         boolean bool2 = Character.isJavaIdentifierPart(c2);

String str1 = "c1 may be part of a Java identifier is " + bool1;         String str2 = "c2 may be part of a Java identifier is " + bool2;

System.out.println(str1);         System.out.println(str2);     } } ```

Output:

```java c1 may be part of a Java identifier is true c2 may be part of a Java identifier is true

```

程序 2:

```java // Java program to illustrate // Character.isJavaIdentifierPart(int codepoint) method import java.lang.*;

public class gfg {

public static void main(String[] args)     {

// Create 2 int primitives c1, c2         int c1 = 0x85f1, c2 = 0x95c0;

// Assign isJavaIdentifierPart results of c1, c2         // to boolean primitives bool1, bool2         boolean bool1 = Character.isJavaIdentifierPart(c1);         boolean bool2 = Character.isJavaIdentifierPart(c2);

String str1 = "c1 may be part of a Java identifier is " + bool1;         String str2 = "c2 may be part of a Java identifier is " + bool2;

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

Output:

```java c1 may be part of a Java identifier is true c2 may be part of a Java identifier is true

```
The Character.isJavaIdentifierPart(char ch) is similar to the previous method in all manner but cannot handle supplementary characters. To support all Unicode characters, including supplementary characters, use the previous method.

语法:

java public static boolean isJavaIdentifierPart(char ch)

参数:参数 ch 是字符数据类型，指的是要测试的字符。

返回值:如果字符可能是 Java 标识符的一部分，char 类的 isJavaIdentifierPart(char ch)方法返回 true 否则为假。

下面的程序用来说明 charter . isjavaidentifierrpart(char ch)方法的使用: 程序 1:

```java // Java program to illustrate // Character.isJavaIdentifierPart(char ch) method import java.lang.*;

public class gfg {

public static void main(String[] args)     {

// Create 2 char primitives c1, c2 and assign values         char c1 = '5', c2 = '%';

// Assign isJavaIdentifierPart results of         //c1, c2 to boolean primitives bool1, bool2         boolean bool1 = Character.isJavaIdentifierPart(c1);         boolean bool2 = Character.isJavaIdentifierPart(c2);

String str1 = c1 + " may be part of a Java identifier is " + bool1;         String str2 = c2 + " may be part of a Java identifier is " + bool2;

// Print bool1, bool2 values         System.out.println(str1);         System.out.println(str2);     } } ```

Output:

```java 5 may be part of a Java identifier is true % may be part of a Java identifier is false

```

程序 2:

```java // Java program to illustrate // Character.isJavaIdentifierPart(char ch) method import java.lang.*;

public class gfg {

public static void main(String[] args)     {

// Create 2 char primitives c1, c2 and assign values         char c1 = '6', c2 = '*';

// assign isJavaIdentifierPart results of         //c1, c2 to boolean primitives bool1, bool2         boolean bool1 = Character.isJavaIdentifierPart(c1);         boolean bool2 = Character.isJavaIdentifierPart(c2);

String str1 = c1 + " may be part of a Java identifier is " + bool1;         String str2 = c2 + " may be part of a Java identifier is " + bool2;

// Print bool1, bool2 values         System.out.println(str1);         System.out.println(str2);     } } ```

Output:

```java 6 may be part of a Java identifier is true * may be part of a Java identifier is false

```