Java String转char

1 Java String转char的介绍

我们可以使用String类的charAt() 方法在Java中将String转换为char。

2 Java String转char的声明

charAt() 方法返回指定索引的单个字符。charAt() 方法的签名如下：

public char charAt(int index)  

3 Java String转char的案例1

package com.yiidian;

/**
 * 一点教程网： http://www.yiidian.com
 */
public class StringToCharExample1{  
public static void main(String args[]){  
String s="hello";  
char c=s.charAt(0);//returns h  
System.out.println("1st character is: "+c);  
}}  

输出结果为：

1st character is: h

4 Java String转char的案例2

public class StringToCharExample2{  
public static void main(String args[]){  
String s="hello";    
for(int i=0; i<s.length();i++){  
        char c = s.charAt(i);  
        System.out.println("char at "+i+" index is: "+c);  
}   
}} 

输出结果为：

char at 0 index is: h
char at 1 index is: e
char at 2 index is: l
char at 3 index is: l
char at 4 index is: o

5 Java String转char的案例3

package com.yiidian;

/**
 * 一点教程网： http://www.yiidian.com
 */
public class StringToCharExample3{  
public static void main(String args[]){  
String s1="hello";    
char[] ch=s1.toCharArray();    
for(int i=0;i<ch.length;i++){    
System.out.println("char at "+i+" index is: "+ch[i]);   
}  
}}  

输出结果为：

char at 0 index is: h
char at 1 index is: e
char at 2 index is: l
char at 3 index is: l
char at 4 index is: o