下面哪段语法执行正确()
第1题:
A.s>>>=3;
B.int i=s.length();
C.s[3]=”x”;
D.String short_s=s.trim();
E.String t=”root”+s;
第2题:
下列哪个程序段可能导致错误?
A.String s="hello"; String t= "good"; String k=s+ t;
B.String s="hello"; String t; t=s[3]+"one";
C.String s="hello"; String standard=s. toUpperCase
D.String s="hello"; String t =s+ "good"
第3题:
下列语句能给数组赋值而不使用for循环的是
A.myArray{[1]="One";[2]="Two";[3]="Three";}
B.String s[5]=new String[]{"Zero", "One", "Two", "There", "Four"};
C.String s[]=new String[]{"Zero", "One", "Two", "There", "Four"};
D.String s[]=new String[]=|"Zero", "One", "Two", "There", "Four"};
第4题:
以下4组表达式中结果是逻辑值.T.的是_________。
A.'this'$'this is a string'
B.'this'$'THIS IS A STRING'
C.'this is a string'S'this'
D.'this'>'this is a string'
第5题:
给出下列的代码则以下哪个选项返回true? String s = "hello" ; String s = "hello" ; char c[] = { 'h' ,'e','l','o'};
A.s.equals(t);
B.t.equals(c);
C.s = =t
D.t = = c;
第6题:
下列的( )程序段可能导致错误。
A.String s="hello": Sting t="good"; String k=s+t;
B.Sting s="hello"; String t; t=s [3] + "one";
C.Sting s="hello"; String standard=s.toUpperCase( );
D.String s="hello": Stringt s +"good";
第7题:
下列的哪个程序段可能导致错误?
A.String s = "hello"; String t = "good"; String k = s + t;
B.String s = "hello"; String t; t = s[3] + "one";
C.String s = " hello "; String standard = s.toUpperCase( );
D.String s = "hello"; String t = s + "good";
第8题:
下面的哪些程序片断可能导致错误()
第9题:
Strings="This is the";Stringt=s.concat("String.");t的内容是()
第10题:
String s= "hello"; String t = "hello"; char c[] = {’h’,’e’,’l’,’l’,’o’} ; Which return true?()
第11题:
String s = “Gone with the wind”; String t = “ good”; String k = s + t;
String s = “Gone with the wind”; String t; t = s[3] + “one”;
String s = “Gone with the wind”; String standard = s.toUpperCase();
String s = “home directory”; String t = s – “directory”;
第12题:
String s = Gone with the wind;String t = good ;String k = s + t;
String s = Gone with the wind;String t; t = s[3] + one;
String s = Gone with the wind;String standard = s.toUpperCase();
String s = home directory;String t = s - directory;
第13题:
下列的哪个程序段可能导致错误? ( )
A.String s="hello"; String t="good"; String k=s+t;
B.String s="hello"; String t; t=s[3]+"one";
C.String s="hello"; String standard=s.toUpperCase();
D.String s="hello"; String t=s+"good";
第14题:
给出下列的代码,则以下哪个选项返回true? String s="hello"; String t="hello"; char c []= {'h','e','1','1','o'};A)s.equals(t);
A.t. equals(
B.;
C.s==t;
D.t==c;
第15题:
下列程序执行后,屏幕上显示的应是 public class Testyyy {public static void main(String[]args) {char charl[]={,'t' 'e''s],'t'}; char char2[]={'t','e','s','t','1'}; String s1=new String(char1); String s2=new String(char2,0,4); System.out.println(s1.equals(s2)); } }
A.true
B.假
C.test
D.编译错误
第16题:
下列语句能给数组赋值,而不使用for循环的是
A.myArray{[1]="One";[2]="Two";[3]="Three";}
B.String s[5]=new String[] {"Zero","One","Two","Three","Four"};
C.String s[]=new String[] {"Zero","One","Two","Three","Four"};
D.String s[]=new String[]= {"Zero","One","Two","Three","Four"};
第17题:
下面的程序执行后,屏幕上显示的应是 public class Exam{ public static void main(String[]args){ char char1[]='t','e','s','t'}; char char2[]={'t','e','s','t','1',}; String sl=new String(char1); String s2=new String(char2,0,4); System.out.println(S1.equals(s2)); } }
A.真
B.假
C.test
D.编译错误
第18题:
给出下列的代码,则以下( )选项返回true。 String s="hello"; String t="hello": char c[]={'h','e','l','l','o',};
A.s.equals(t);
B.t.equals(c);
C.s==t;
D.t==c;
第19题:
下面程序执行后,屏幕上显示的应是______。 public class Testl0 { public static void main(String[] args) { char char1[] = {'t', 'e', 's', 't'}; char char2[] = ('t', 'e', 's', 't', '1 }; String s1 = new String(char1); String s2 = new String(char2, 0, 4); System.out.println (si.equal (s2)); } }
A.true
B.假
C.test
D.编译错误
第20题:
下面哪个是对字符串String的正确定义()。
第21题:
有语句String s=”hello world”; ,以下操作哪个是不合法的()
第22题:
Which of the following fragments might cause errors?()
第23题:
String s = Gone with the wind;String t = good ;String k = s + t;
String s = Gone with the wind;String t;t = s[3] + one;
String s = Gone with the wind;String standard = s.toUpperCase();
String s = home directory;String t = s - directory;