Java Character isISOControl() 方法

2024 年 11 月 6 日 | 阅读 2 分钟

Character 类的 isISOControl(int codePoint) 方法通常用于确定所引用的字符是否为 ISO 控制字符。

如果给定字符的代码位于 '\u000' 到 '\u001F' 的范围，或者位于 '\u007F' 到 '\u009F' 的范围，则该字符可被视为 ISO 控制字符。

语法

参数

codePoint：需要测试的字符的 codePoint。

返回值

isISOControl(int codePoint) 方法返回一个布尔值，即如果给定（或指定的）字符是 ISO 控制字符，则返回 true。否则，该方法返回 false。

示例 1

public class JavaCharacterisISOControlExample_1 {
public static void main(String args[]){
	// Initialize three codepoints.
	   int codepoint1 = 28;
	   int codepoint2 = 13480;
	   int codepoint3 = 13542;
	// Check whether the codepoints are isISOControl character or not.
	   boolean check1 = Character.isISOControl(codepoint1);
	   boolean check2 = Character.isISOControl(codepoint2);
	   boolean check3 = Character.isISOControl(codepoint3);
	// Print the result.
	
System.err.print("The first codepoint \'"+codepoint1+"\' is an ISO Control: "+check1+ "\n");
System.err.print("The second codepoint \'"+codepoint2+"\' is an ISO Control: "+check2+"\n");	
System.err.print("The third codepoint \'"+codepoint3+"\' is  an ISO Control: "+check3+"\n");		
   }
}

输出

The first codepoint '28' is an ISO Control: true
The second codepoint '13480' is an ISO Control: false
The third codepoint '13542' is  an ISO Control: false

示例 2

import java.util.Scanner;
public class JavaCharacterisISOControlExample_2 {
    public static void main(String[] args) {
    // Ask for user input
       System.out.print("Enter the first input:");
    // Use the Scanner class to get the user input
       Scanner s1 = new Scanner(System.in);
    // Gets the user input
       char[] value1 = s1.nextLine().toCharArray();
    // Check whether the user input is an ISO control character or not
       for (char ch1 : value1) {
boolean result1 = Character.isISOControl(ch1);
    // print the result
if(result1){
System.out.println("The character " + ch1 + " is an ISO control character: ");				
}
else{
System.out.println("The character " + ch1 + " is not an ISO control character:");
           }		
System.out.print("Enter the second input:");
       Scanner s2 = new Scanner(System.in);
       char[] value2 = s2.nextLine().toCharArray();
       for (char ch2 : value2) {
boolean result2 = Character.isISOControl(ch2);
if(result2){
System.out.println("The character " + ch2 + " is an ISO control character: ");				
}
else{
System.out.println("The character " + ch2 + " is not an ISO control character:");
        }		
      }
    }
  }
}

输出

Enter the first input:@
The character @ is not an ISO control character:
Enter the second input:A
The character A is not an ISO control character:

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Java Character isISOControl() 方法

语法

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示例 1

示例 2

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Java Character isISOControl() 方法

语法

参数

返回值

示例 1

示例 2

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