Können Sie diese 10 Java-Fragen beantworten? Testen Sie Ihr Niveau

public class Test {  
    public static void main(String [] args){  
        System.out.println(new B().getValue());  
    }  
    static class A{  
        protected int value;  
        public A(int v) {  
            setValue(v);  
        }  
        public void setValue(int value){  
            this.value = value;  
        }  
        public int getValue(){  
            try{  
                value++;  
                return value;  
            } catch(Exception e){  
                System.out.println(e.toString());  
            } finally {  
                this.setValue(value);  
                System.out.println(value);  
            }  
            return value;  
        }  
    }  
    static class B extends A{  
        public B() {  
            super(5);  
            setValue(getValue() - 3);  
        }  
        public void setValue(int value){  
            super.setValue(2 * value);  
        }  
    }  
}

public class test {
public static void main(String args[]) {int x,y;x=5>>2;y=x>>>2;System.out.println(y);}
}

public class Test
{
    public static void main(String[] args)
    {
        int x = 0;
        int y = 0;
        int k = 0;
        for (int z = 0; z < 5; z++) {
            if ((++x > 2) && (++y > 2) && (k++ > 2))
            {
                x++;
                ++y;
                k++;
            }
        }
        System.out.println(x + ”” +y + ”” +k);
    }
}

public class foo {
public static void main(String sgf[]) {
StringBuffer a=new StringBuffer(“A”);
StringBuffer b=new StringBuffer(“B”);
operate(a,b);
System.out.println(a+”.”+b);
}
static void operate(StringBuffer x,StringBuffer y) {
x.append(y);
y=x;
}
}

class Two{
    Byte x;
}
class PassO{
    public static void main(String[] args){
        PassO p=new PassO();
        p.start();
    }
    void start(){
        Two t=new Two();
        System.out.print(t.x+””);
        Two t2=fix(t);
        System.out.print(t.x+” ” +t2.x);
    }
    Two fix(Two tt){
        tt.x=42;
        return tt;
    }
}

byte b1=1,b2=2,b3,b6,b8;
final byte b4=4,b5=6,b7;
b3=(b1+b2);  /*语句1*/
b6=b4+b5;    /*语句2*/
b8=(b1+b4);  /*语句3*/
b7=(b2+b5);  /*语句4*/
System.out.println(b3+b6);

class C {
    C() {
        System.out.print("C");
    }
}
class A {
    C c = new C();
    A() {
        this("A");
        System.out.print("A");
    } 
    A(String s) {
        System.out.print(s);
    }
}
class Test extends A {
    Test() {
        super("B");
        System.out.print("B");
    }
    public static void main(String[] args) {
        new Test();
    }
}

public class ClassTest{
     String str = new String("hello");
     char[] ch = {'a','b','c'};
     public void fun(String str, char ch[]){
     str="world";
     ch[0]='d';
 }
 public static void main(String[] args) {
     ClassTest test1 = new ClassTest();
     test1.fun(test1.str,test1.ch);
     System.out.print(test1.str + " and ");
     System.out.print(test1.ch);
     }
 }

 public static void main (String[] args) { 
    String classFile = "com.jd.". replaceAll(".", "/") + "MyClass.class";
    System.out.println(classFile);
}