多項選擇題

The 8859-1 character code for the uppercase letter A is 65. Which of these code fragments declare and initialize a variable of type char with this value？（）

A.char ch = 65；
B.char ch = ’¥65’；
C.char ch = ’¥0041’；
D.char ch = ’A’；
E.char ch = "A"；

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Given the following code， which method declarations， when inserted at the indicated position， will not cause the program to fail compilation？（）
public class Qdd1f {
public long sum（long a， long b） {
return a + b；
}
// insert new method declaration here
}

A.public int sum（int a， int b） { return a + b； }
B.public int sum（long a， long b） { return 0； }
C.abstract int sum（）；
D.private long sum（long a， long b） { return a + b； }
E.public long sum（long a， int b） { return a + b； }

多項選擇題

Which statements concerning casting and conversion are true？（）

A.Conversion from int to long does not need a cast.
B.Conversion from byte to short does not need a cast.
C.Conversion from float to long does not need a cast.
D.Conversion from short to char does not need a cast.
E.Conversion from boolean to int using a cast is not possible.

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The 8859-1 character code for the uppercase letter A is 65. Which of these code fragments declare and initialize a variable of type char with this value？（）

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Given the following code， which method declarations， when inserted at the indicated position， will not cause the program to fail compilation？（） public class Qdd1f { public long sum（long a， long b） { return a + b； } // insert new method declaration here }

Which statements concerning casting and conversion are true？（）

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The 8859-1 character code for the uppercase letter A is 65. Which of these code fragments declare and initialize a variable of type char with this value？（）

Given the following code， which method declarations， when inserted at the indicated position， will not cause the program to fail compilation？（）
public class Qdd1f {
public long sum（long a， long b） {
return a + b；
}
// insert new method declaration here
}

Which statements concerning casting and conversion are true？（）