java试题-下面代码的运行结果为
import java.io.*;
import java.util.*;
public class foo{
public static void main (String[] args){
String s;
System.out.println("s=" + s);
}
}import java.io.*;
import java.util.*;
public class foo{
public static void main (String[] args){
String s;
System.out.println("s=" + s);
}
}
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