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StringBuilder类的Capacity()方法 (StringBuilder Class capacity() method)
capacity() method is available in java.lang package.
Capacity()方法在java.lang包中可用。
capacity() method is used to return the current capacity (i.e. it returns the initial capacity + new occupied characters) and capacity indicates the amount of storage vacant for allowing newly occupying will occur.
Capacity()方法用于返回当前容量(即,它返回初始容量+新占用的字符),而Capacity表示将出现允许新占用的空闲存储量。
capacity() 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.
Capacity()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。
capacity() method does not throw an exception at the time of returning capacity.
Capacity()方法在返回容量时不会引发异常。
Syntax:
句法:
public int capacity();
Parameter(s):
参数:
It does not accept any parameter.
它不接受任何参数。
Return value:
返回值:
The return type of this method is int, it returns a reference to this StringBuilder object.
此方法的返回类型为int ,它返回对此StringBuilder对象的引用。
Example:
例:
// Java program to demonstrate the example
// of int capacity() method of StringBuilder
public class Capacity {
public static void main(String[] args) {
// Creating an StringBuilder object
StringBuilder st_b = new StringBuilder("Java");
System.out.println("st_b = " + st_b);
// By using capacity() method to display current capacity
// of st_b object i.e. 16(initial) + 4(No.of char consumed) //i.e.20
System.out.println("st_b.capacity() = " + st_b.capacity());
// Creating another StringBuilder object
st_b = new StringBuilder("Programming");
System.out.println("st_b = " + st_b);
// By using capacity() method to display current capacity
// of st_b object i.e. 16(initial) + 11(No.of char consumed) //i.e.27
System.out.println("st_b.capacity() = " + st_b.capacity());
}
}
Output
输出量
st_b = Java
st_b.capacity() = 20
st_b = Programming
st_b.capacity() = 27
翻译自: https://www.includehelp/java/stringbuilder-capacity-method-with-example.aspx
本文标签: 示例方法JavaStringBuilderCapacity
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