StringBuffer的解读(二)
StringBuffer的解读(二) StringBuffer默认容量大小是16个字符。 StringBuffer后面append NULL的测试,代码如下: public class Test { public static void main(String[] args) { StringBuffer sb = new StringBuffer("the"); System.out.println("sb is: " + sb);; String str = null; sb.append(str); System.out.println("sb is: " + sb);; } } StringBuffer后面append字符串+原先字符数组<容量的测试,代码如下: public class Test { public static void main(String[] args) { StringBuffer sb = new StringBuffer("the"); System.out.println("sb.length: " + sb.length()); Syst...