问题:以下算术运算符中错误的是() ...
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问题:单选题public void testIfA(){ if(testIfB("True")){ System.out.println("True"); }else{ System.out.println("Nottrue"); } } public Boolean testIfB(Stringstr){ return Boolean.valueOf(str); } What is the result when method testIfA is invoked?()A TrueB NottrueC Ane...
问题:以下哪个组件不支持动作监听器?()...
问题:实现了Set接口的类是哪项?() ...
问题:多选题class Order implements Runnable { public void run() { try { Thread.sleep(2000); } catch (Exception e) { } System.out.print("in "); } public static void main(String [] args) { Thread t = new Thread(new Order()); t.start(); System.out.print("pre ...
问题:在JSP中不能在不同用户之间共享数据的方法是()...
问题:现有: class Test2 f public static void main (String [] ar...
问题:public class Pet{ private String name; public Pet(){ S...
问题:单选题class Order3 implements Runnable { public static void main(String [] args) { new Thread(new Order3()).start(); for(int x = 0; x 〈 10; x++) System.out.print("m"); } public void run() { for(int x = 0; x 〈 10; x++) { //insert code here System.out.p...
问题:单选题当动作监听器激发时,会调用什么函数?()A onActivated函数;B actionPerformed函数;C doAction函数;D checkActionOn函数;...
问题:单选题为了使得System.out.println()输出对象引用的时候得到有意义的信,我们应该覆盖Object t{-的哪个方法?()A equalsB toStringC hashCodeD notify...
问题:多选题下面哪些方法禁止子类重定义该方法()Aprotected void m(){}Bfinal void m(){}Cabstractfinal void m (){}Dstaticfinal void m(){}...
问题:单选题现有如下五个声明: Linel: int a_really_really_really_long_variable_name=5 ; Line2: int _hi=6; Line3: int big=Integer. getlnteger("7”); Line4:int $dollars=8; line5: int %opercent=9; 哪行无法通过编译?()A Line1B Line3C Line4D Line5...
问题:以下关于File对象的描述中,错误的是()...
问题:public class Pet{ private String name; public Pet(St...
问题:单选题class Test4 { public static void main(String [] args) { boolean x = true; boolean y = false; short z = 42; if((z++ = = 42) (y = true)) z++; if((x = false) || (++z = = 45)) z++; System.out.println("z = " + z); } } 结果为:()A z = 42B z ...
问题:单选题public class Employee{ private String name; public Employee(String name){ this.name = name; } public void display(){ System.out.print(name); } } public class Manager extends Employee{ private String department...
问题:单选题在java中.在使用JDBC时。对于多次调用同一条SQL语句的情况,使用()通常会提高效。A StatementB CallableStatementC PreparedStatementD PrarmeterStatement...
问题:函数重载时,同名函数的参数类型列表必须不同。...
问题:在Swing GUI编程中, setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE...