Java Character charCount() 方法

2024 年 11 月 6 日 | 阅读 2 分钟

character 类中的 charCount() 方法用于确定表示指定字符所需的 char 值总数。顾名思义，它计算 char 值的总数。

语法

参数

该方法需要一个 codePoint。CodePoint 是要测试的字符。

返回值

如果给定的字符等于或大于 0X10000，则该方法返回 2。否则，该方法返回 1。

示例 1

public class CharactercharCountMethodExample1 {
    public static void main(String[] args) {
	int obj1 = 59;
	int obj2 = 1546719;
// Check the number of char values needed and print the values.
       int r1 = Character.charCount(obj1);
System.out.println("The first object " + obj1 + " can be represented by "+ r1 + " char values");
	int r2 = Character.charCount(obj2);
System.out.println("The second object " + obj2 + " can be represented by " + r2 + " char values");
    }
}

输出

The first object 59 can be represented by 1 char values
The second object 1546719 can be represented by 2 char values

示例 2

public class CharactercharCountMethodExample2 {
	public static void main(String[] args) {
// Case 1: codePoint is less than 0X10000. It will return 1.   
	int a = Character.charCount(50);
  System.out.println("The value comes to be:");
  System.out.println(a);
// Case 2: codePoint is equal to 0X10000. It will return 2.
	int b = Character.charCount(589);
  System.out.println("The value comes to be:");
  System.out.println(b);
// Case 3: codePoint is greater than 0X10000. It will return 2.
	int c = Character.charCount(67890);
  System.out.println("The value comes to be:");
  System.out.println(c);
   }
}

输出

The value comes to be:
1
The value comes to be:
1
The value comes to be:
2

示例 3

import java.util.Scanner;
public class CharactercharCountMethodExample3{
   public static void main(String[] args)
     {
      	Scanner scanner1 = new Scanner(System.in); 
	 System.out.println("Enter the first number");
        int a1= scanner1.nextInt();
        System.out.println("The value comes to be: "+   +Character.charCount(a1));
       Scanner scanner2 = new Scanner(System.in); 
        System.out.println("Enter the second number");
        int a2= scanner2.nextInt();
        System.out.println("The value comes to be:   "+   +Character.charCount(a2));
      Scanner scanner3 = new Scanner(System.in); 
	System.out.println("Enter the third number");
       int a3= scanner3.nextInt();
       System.out.println("The value comes to be:  "+  +Character.charCount(a3));       
	}
}

输出

Enter the first number
67
The value comes to be: 1
Enter the second number
78
The value comes to be:   1
Enter the third number
2456789
The value comes to be:  2

下一主题Java-character-charvalue-method

Java Character charCount() 方法

语法

参数

返回值

示例 1

示例 2

示例 3

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Java Character charCount() 方法

语法

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示例 1

示例 2

示例 3

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