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public class Test{
    int a=5;
    a=10;    //ÕâÀï±àÒë²»ÄÜͨ¹ý
    public static void main(String[] args){
    //´Ë´¦Ê¡ÂÔ·½·¨Ìå
    }
}

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Java code:
public class T{

public static void main(String[] args){
int a = 5 ;
a=10;
}
}

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Java code:
public class Test{
int n = 5;
public void test(int n){
n = 10;
System.out.println(n);
}
public static void main(String[] args){
int a = 5 ;
a=10;
System.out.println(a);
T t = new T();
t.test(1);
}
}

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Java codepublicclass Test{int n=5;publicvoid test(int n){
        n=10;
        System.out.println(n);
    }publicstaticvoid main(String[] args){int a=5 ;
        a=10;