关于StringBuffer类的代码的执行结果是? 为什么运行结果是AB.B
public class TestStringBuffer {
public static void main(String args[]) {
StringBuffer a = new StringBuffer("A");
StringBuffer b = new StringBuffer("B");
mb_operate(a, b);
System.out.println(a + "." + b);
}
static void mb_operate(StringBuffer x, StringBuffer y) {
x.append(y);
y = x...
关于StringBuffer类的代码的执行结果是? 为什么运行结果是AB.B
public class TestStringBuffer {
public static void main(String args[]) {
StringBuffer a = new StringBuffer("A");
StringBuffer b = new StringBuffer("B");
mb_operate(a, b);
System.out.println(a + "." + b);
}
static void mb_operate(StringBuffer x, StringBuffer y) {
x.append(y);
y = x...