以下哪句不能编译?
A: if ( a==b ) else System.out.println("no");
B: if ( a==b ); else System.out.println("no");
C: if ( a==b ){} else System.out.println("no");
D: if ( a==b ) System.out.println("no");
A: if ( a==b ) else System.out.println("no");
B: if ( a==b ); else System.out.println("no");
C: if ( a==b ){} else System.out.println("no");
D: if ( a==b ) System.out.println("no");
举一反三
- 请看下面的程序代码,当 n 为( )值时,程序段将输出字符串 second。 [br][/br] switch(n) { [br][/br] case 0: System .out .println(“first”); [br][/br] case 1: [br][/br] case 2: System .out .println(“second”); break; [br][/br] default: System .out .println(“end”); [br][/br] }(2.0) A: 0 B: 1 C: 2 D: 以上都可以
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- 以下哪个是Java ArrayList 类的方法？ A: add B: println C: import D: System