單項(xiàng)選擇題

public class Test {
private static float[] f = new float[2]；
public static void main（String args[]） {
System.out.println（“f[0] = “ + f[0]）；
}
}
What is the result？（）

A. f[0] = 0
B. f[0] = 0.0
C. Compilation fails.
D. An exception is thrown at runtime.

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單項(xiàng)選擇題

What is the numerical range of a char？（）

A. 0 ... 32767
B. 0 ... 65535
C. –256 ... 255
D. –32768 ... 32767
E. Range is platform dependent.

多項(xiàng)選擇題

Which two statements are true regarding the return values of property written hashCode and equals methods from two instances of the same class？（）

A. If the hashCode values are different， the objects might be equal.
B. If the hashCode values are the same， the object must be equal.
C. If the hashCode values are the same， the objects might be equal.
D. If the hashCode values are different， the objects must be unequal.

public class Test { private static float[] f = new float[2]； public static void main（String args[]） { System.out.println（“f[0] = “ + f[0]）； } } What is the result？（）

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What is the numerical range of a char？（）

Which two statements are true regarding the return values of property written hashCode and equals methods from two instances of the same class？（）

public class Test {
private static float[] f = new float[2]；
public static void main（String args[]） {
System.out.println（“f[0] = “ + f[0]）；
}
}
What is the result？（）

What is the numerical range of a char？（）

Which two statements are true regarding the return values of property written hashCode and equals methods from two instances of the same class？（）