stringbufferdemo2.java

来自「JAVA编程思想源代码 值得一下 很难找的」· Java 代码 · 共 24 行

package chapter8;

public class StringBufferDemo2 {

	public static void main(String[] args) {
		StringBuffer str1 = new StringBuffer();
		StringBuffer str2 = new StringBuffer(1000);
		StringBuffer str3 = new StringBuffer("abc");
		System.out.println("默认构造函数创建的str1:" + str1);
		System.out.println("str1缓冲区容量为：" + str1.capacity());
		System.out.println("初始化容量（1000）的构造函数创建的str2:" + str2);
		System.out.println("str2缓冲区容量为：" + str2.capacity());
		System.out.println("初始化字符串的构造函数创建的str3:" + str3);
		System.out.println("str3缓冲区容量为：" + str3.capacity());
		for (int i = 0; i < 10; i++) {
			str1.append("hello");
		}
		System.out.println("当str1中的字符长度为" + str1.length() + "时，它的容量为："
				+ str1.capacity());

	}

}