表达式““.equals(null)的结果为true
表达式““.equals(null)的结果为true
相关考题:
以下返回true的表达式有()A.“george”==“george”B.”george”=“george”C.“george”.equals(newString(“george”))D.“george”==newString(“george”)
在下列表达式中,运算结果逻辑为真的是( )。 A.EMPTY(.NULL.)B.EMPTY(SPACE(8)) 在下列表达式中,运算结果逻辑为真的是( )。A.EMPTY(.NULL.)B.EMPTY(SPACE(8))C.LIKE(”edit”,”edi?”)D.AT(”a”,”ainimal”)
以下3个表达式的结果分别是?() 0===’0’ ’0’==false 1===trueA、false,true,falseB、true,true,falseC、false,false,trueD、true,true,true
下列哪些表达式返回的是true()。A、"john"=="john"B、"john".equals("john")C、"john"="john"D、"john".equals(newButton("john"))
Given that b and c refer to instances of wrapper classes, which two statements are true?()A、 b.equals(b) returns true.B、 b.equals(c) returns the same result as b == c.C、 b.eqials(c) can return false even if c.equals(b) returns true.D、 b.equals(c) throws an exception if b and c are different wrapper types.E、 b.equals(c) returns false if the type of wrapper objects being compared are different.
Which of the following statements are true?() A、 The equals() method determines if reference values refer to the same object.B、 The == operator determines if the contents and type of two separate objects match.C、 The equals() method returns true only when the contents of two objects match.D、 The class File overrides equals() to return true if the contents and type of two separate objects match.
var one;var two=null;console.log(one==two,one===two);上面代码的输出结果是()。A、false trueB、true falseC、false falseD、true true
条件表达式(result)?"true":"false"的意义是(),其中result是逻辑表达式。A、如果result为true,则表达式的值是true,否则为falseB、如果result为false,则表达式的值是true,否则为falseC、如果result为true,则表达式的值是false,否则为trueD、表达式错误
单选题条件表达式(result)?"true":"false"的意义是(),其中result是逻辑表达式。A如果result为true,则表达式的值是true,否则为falseB如果result为false,则表达式的值是true,否则为falseC如果result为true,则表达式的值是false,否则为trueD表达式错误
多选题Given that b and c refer to instances of wrapper classes, which two statements are true?()Ab.equals(b) returns true.Bb.equals(c) returns the same result as b == c.Cb.eqials(c) can return false even if c.equals(b) returns true.Db.equals(c) throws an exception if b and c are different wrapper types.Eb.equals(c) returns false if the type of wrapper objects being compared are different.
单选题在下面的Visual FoxPo表达式中,运算结果为逻辑真的是( )。AEMPTY(.NULL.)BLIKE('xy?','xyz')CAT('xy','abcxyz')DIS NULL(SPACE(0))
单选题下列值不为true的表达式有()。Ajohn==johnBjohn.equals(john)Cjohn=johnDjohn.equals(new String(john))