JAVAÖµ´«µÝ(call by value)
public class Foo {
static void operate(StringBuffer x,StringBuffer y){
x.append(y);
y=x;
}
public static void main(String args[]){
StringBuffer a = new StringBuffer("A");
StringBuffer b = new StringBuffer("B");
operate(a,b);
System.out.println(a+","+b);
}
}
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