Given the following code fragment: 1) String str = null; 2) if ((str != null) (str.length() 10)) { 3) System.out.println("more than 10"); 4) } 5) else if ((str != null) (str.length() 5)) { 6) System.out.println("less than 5"); 7) } 8) else { System.out.println("end"); } Which line will cause error?() A、 line 1B、 line 2C、 line 5D、 line 8
Given the following code fragment: 1) String str = null; 2) if ((str != null) && (str.length() > 10)) { 3) System.out.println("more than 10"); 4) } 5) else if ((str != null) & (str.length() < 5)) { 6) System.out.println("less than 5"); 7) } 8) else { System.out.println("end"); } Which line will cause error?()
- A、 line 1
- B、 line 2
- C、 line 5
- D、 line 8
相关考题:
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.
publicstaticvoidmain(String[]args){Stringstr=null?;if(str==null){System.out.println(”null”);}else(str.length()==0){System.out.println(”zero”);}else{System.out.println(”some”);}}Whatistheresult?() A.nullB.zeroC.someD.Compilationfails.E.Anexceptionisthrownatruntime.
Giventhefollowingcodefragment:1)Stringstr=null;2)if((str!=null)(str.length()10)){3)System.out.println(morethan10);4)}5)elseif((str!=null)(str.length()5)){6)System.out.println(lessthan5);7)}8)else{System.out.println(end);}Whichlinewillcauseerror?()A.line1B.line2C.line5D.line8
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下面是一段javabean程序,该程序的运行结果是( )。public class NullTest{public static void main(String[]?args){int M=0;String str=null;StringBuffer sb=new StringBuffer("=");sb.append(str);sb.append(M++);System.out.println(sb.toString( ));}}A.=nullB.=null0C.=null1D.=nullM
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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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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单选题public class Test { public static void main(String[] args) { String str = NULL; System.out.println(str); } } What is the result?()A NULLB Compilation fails.C The code runs with no output.D An exception is thrown at runtime.
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