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getChars() method is available in java.lang package.
getChars()方法在java.lang包中可用。
getChars() method is used to copy all the characters from the given arguments (int src_st, int src_end) into another destination array of char type like char[] dest.
getChars()方法用于将给定参数(int src_st,int src_end)中的所有字符复制到另一个char类型的目标数组中,例如char [] dest。
In this method copy first character starts at index src_st and copying the last character ends at index src_end so all the copied characters will be placed in an array char[] dest and this array index starts at dest_st and ends at dest_beg+(src_end-src_beg)-1.
在此方法中,复制第一个字符开始于索引src_st ,复制最后一个字符结束于索引src_end,因此所有复制的字符都将放置在char [] dest数组中,并且此数组索引开始于dest_stg并结束于dest_beg +(src_end-src_beg) -1 。
getChars() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
getChars()方法是一种非静态方法,只能通过类对象访问,如果尝试使用类名称访问该方法,则会收到错误消息。
This method may throw an exception at the time of copying and placing copied characters.
在复制和放置复制的字符时,此方法可能会引发异常。
Syntax:
句法:
public void getChars(int src_st, int src_end, char[] dest, int dest_st);
Parameter(s):
参数:
int src_st – represents the index to start copying.
int src_st –表示要开始复制的索引。
int src_end – represents the index to end copying.
int src_end –表示结束复制的索引。
int char[] dest – represents the array for copied elements.
int char [] dest –表示复制元素的数组。
int dest_beg – represents the index of starting position of char[] dest.
int dest_beg –表示char [] dest的起始位置的索引。
Return value:
返回值:
The return type of this method is void, it returns nothing.
此方法的返回类型为void ,不返回任何内容。
Example:
例:
// Java program to demonstrate the example // of getChars(int src_st, int src_end, char[] dest, int dest_st)// method of StringBuilder public class GetChars { public static void main(String[] args) { int src_st = 0; int src_end = 4; int dest_st = 0; // Creating an StringBuilder object StringBuilder st_b = new StringBuilder("Java World"); // Display st_b System.out.println("st_b = " + st_b); char[] dest = new char[] { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j' }; // By using getChars() method is to copy the chars from the // given src_st to src_end of st_b and placed into dest[] // and position of placing the copied chars starts at dest_st st_b.getChars(src_st, src_end, dest, dest_st); // Display destination array for (char val: dest) System.out.print("" + val); }}
Output
输出量
st_b = Java WorldJavaefghij
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