class ValHold {

public int i = 10;

}

public class ObParm {

public static void main(String[] args) {

ObParm o = new ObParm();

o.amethod();

}

public void amethod() {

int i = 99;

ValHold v = new ValHold();

v.i = 30;

another(v, i);

System.out.println(v.i + " " + i);

}

public void another(ValHold v, int i) {

i = 0;

v.i = 20;

ValHold vh = new ValHold();

v = vh;

System.out.println(v.i + " " + i);

}

}

輸出結(jié)果：

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