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String str="abcedf"; int length=str.length。
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public static void test(String str) { int check = 4; if (check = str.length()) { System.out.print(str.charAt(check -= 1) +“, “); } else { System.out.print(str.charAt(0) + “, “); } } and the invocation: test(”four”); test(”tee”); test(”to”); What is the result?() A、 r, t, t,B、 r, e, o,C、 Compilation fails.D、 An exception is thrown at runtime.
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单选题下面哪个方法设置MIME类型?()A
setHeader(String headerName,String headerValue)B
setContentType(String mimeType)C
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单选题String date="Today is Sunday.";String str2=data.CharAt(s.length( )-1);则str2为()A
yB
.C
nullD
false
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单选题public static void test(String str) { int check = 4; if (check = str.length()) { System.out.print(str.charAt(check -= 1) +“, “); } else { System.out.print(str.charAt(0) + “, “); } } and the invocation: test(”four”); test(”tee”); test(”to”); What is the result?()A
r, t, t,B
r, e, o,C
Compilation fails.D
An exception is thrown at runtime.
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单选题public static void main(String[] args) { String str = “null‟; if (str == null) { System.out.println(”null”); } else (str.length() == 0) { System.out.println(”zero”); } else { System.out.println(”some”); } } What is the result?()A
nullB
zeroC
someD
Compilation fails.E
An exception is thrown at runtime.
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单选题public static void main(String[]args){ String str="null"; if(str==null){ System.out.println("null"); }else(str.length()==0){ System.out.println("zero"); }else{ System.out.println("some"); } } What is the result?()A
nullB
zeroC
someD
Compilationfails.E
Anexceptionisthrownatruntime.
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