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public class Test {
public static void main(String[] args) {
StringBuffer sb = new StringBuffer("a");
StringBuffer[] sbs = new StringBuffer[]{sb,null};
sb.append("b");
sb = null;
sbs[0].append("c");
System.out.println(sbs[0]);
sbs[0] = null;
sbs = null;
}
}
public class Testt {
public static void main(String[] args) {
StringBuffer sb = new StringBuffer("a");
StringBuffer[] sbs = new StringBuffer[]{sb,null};
System.out.println("地址是否一致"+(sb==sbs[0]));
sb.append("b");
sb = null;
System.out.println("地址是否一致"+(sb==sbs[0]));
sbs[0].append("c");
sb = new StringBuffer("a");
System.out.println(sb);//打印a
System.out.println(sbs[0]);//打印abc
sbs[0] = null;
sbs = null;
}
}