举一反三
- 6、下列程序的运行结果是（）。String s1 = new String( "abc" );String s2 = new String( "abc" );System.out.println( s1 == s2);String s3 = "你好吗？" ;String s4 = "你" ;String s5 = "好吗？" ;System.out.println( "你好吗？" ==("你" + "好吗？")); A: true true B: false false C: false true D: true false
- 以下程序的输出结果是 String s1="1",s2="2"; String s=s1+s2; System.out.println(s);
- 下列代码片段执行结果是：String s=new String(”abc”); String s1=new String(s); if(s==s1){ System.out.println(”Hello”); } if(s.equals(s1)){ System.out.println(”World”); } A: Hello World B: Hello C: World D: Null
- 请说出下列代码的执行结果 : String s = "abcd"; String s1 = new String(s); if (s = = s1) System.out.println("the same"); if (s.equals(s1)) System.out.println("equals");
- 下面程序段的运行结果是。 String s1="abc"; String s2="def"; String s3=s2; s2="ghi"; System.out.println(s1+s2+s3);
内容
- 0
中国大学MOOC: 写出程序段输出结果：String s1=new String(abc);String s2=abc;System.out.print((s1==s2)+,);System.out.println(s1.equals(s2));
- 1
以下代码共创建了几个对象？String s1=new String("hello");String s2=new String("hello");String s3=s1;String s4=s2; A: 2 B: 4 C: 1 D: 3
- 2
public class Test { public static void main(String[] args) { String s1 = "abc"; String s2 = new String ("abc"); System.out.println(s1 == s2); } } 程序运行结果是
- 3
请阅读程序，然后写出程序运行结果。 public class Demo { public static void main(String args[]) { String s1 = new String("good"); String s2 = new String("GOOD"); String s3 = new String("good"); String s4 = "good"; boolean b1 = s1.equals(s2); boolean b2 = s1.equalsIgnoreCase(s3); boolean b3 = s2.endsWith("oD"); boolean b4 = (s1 == s4); System.out.println(b1); System.out.println(b2); System.out.println(b3); System.out.println(b4); } }
- 4
请阅读下面的代码 String s1=new String(“abc”); String s2=sintern(); String s3=”abc”; System.out.println(s1==s2); System.out.println(s2==s3); System.out.println(s1==s3); 下列选项中,程序的输出结果为(): false true false|false false false|false false true|false true true