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public class Example{
String str = new String("good");
char[] ch = {'a','b','c'};
public void static main(String[] args){
Example ex = new Example();
ex.change(ex.str,ex.ch);
System.out.print(ex.str + " and ");
System.out.print(ex.ch)
}
public void change(String str,char ch[]){
str = "test ok";
ch[0] = 'g';
}
}