The role of char method in java

The char method in Java converts integer Unicode code points to characters and can be used to manipulate character data, including storing constants in variables, extracting characters from other types, and operating with character code points.

The role of char method in Java

The char method in Java is a built-in Method used to convert an integer value to a character type value. It accepts an integer argument representing the code point of the Unicode character and returns a char value of primitive type.

Purpose

char method is mainly used to process character data. It can convert integer values ​​to characters, which is useful in the following scenarios:

• Storing character constants in variables
• From other data types such as int or String) to extract characters
• Use character code points for character operations

Syntax

public static char char(int codePoint)

Parameters

• codePoint: The integer Unicode code point to be converted

Return value

A primitive type char value representing the character for the given code point.

Example

// 将整数 65 转换为字符 'A'
char myChar = Character.char(65);
System.out.println(myChar); // 输出: A

// 将 Unicode 代码点 9774 转换为字符 '☀'
char sunChar = Character.char(9774);
System.out.println(sunChar); // 输出: ☀

It should be noted that:

• char The method can only Converts valid Unicode character code points. If the provided code point is invalid, it will throw IllegalArgumentException. The
• char method returns a primitive type of char value, which is a 16-bit unsigned integer.

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