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Java code:

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;
}

}



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sbs[0] = null;
sbs = null;
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Java codepublicclass Test {publicstaticvoid main(String[] args) {
        StringBuffer sb=new StringBuffer("a");
        StringBuffer[] sbs=new StringBuffer[]{sb,null};//sbs£Û0£Ý£½¡°a¡±
        sb.append("b");//sbs£Û0£Ý£½¡°ab¡±
        sb=null;//sbs£Û0£Ý£½¡°ab¡±