执行以下代码会输出什么结果?() public class Test { StringgetStr(String s){ return s + “hello”; } public static void main(String arg[]) { Test t= new Test(); System.out.println(t.getStr(“LiLei\n”)); } }
阅读以下代码: public class Test{ public static void main(){ System.out.println(“x=”+x); } } 请问,代码运行的结果是?()
package test1; public class Test1 { static int x = 42; } package test2; public class Test2 extends test1.Test1 { public static void main(String[] args) { System.out.println(“x = “ + x); } } What is the result?()
现有: class Test2 f public static void main (String [] args) { short a,b,C; a=l; b=2; C=a+b; a+=2: } 以上代码中,哪一句是错误的?()
执行以下代码,输出结果的结果是? () public class Test{ public String[] ss = new String[5]; public static void main(String[] args){ System.out.println(ss[1]); } }
给定JAVA代码,如下:Class Parent{public void count() {System.out.println(10%3) ;}}public class Test extends Parent{public void count() {System.out.println(10/3) ;}public static void main(Stringargs[]) {Parent p = new Test() ;p.count() ;}}运行编译后,输出结果是()。
给出下列代码,如何使成员变量m 被方法fun()直接访问?class Test{private int m;public static void fun(){...}}
读代码:public class Test {public static void main (String args[]) {class Foo {public int i = 3;}Object o = (Object) new Foo();Foo foo = (Foo)o;System.out.println(foo.i);}}结果是:
给定java程序Test.java如下,编译运行,结果是( ) 。package com;class Test {protected void talk () {System.out.print(talk) ; }}给定Test 的子类Test2,代码如下:packagecom.util;import com.*;public class Test2 extends Test {public static void main (String[]args) {new Test2() .talk() ;}
设有如下代码public class Test6{int attr[] = {1,2,3};public static void main ( String args[] ) {System.out.println(attr[0]);}}哪个叙述为真?
读代码:public class ExceptionTest {class TestException extends Exception {}public void runTest () throws TestException {}public void test () /* Point X*/ {runTest ();}}第4行//point X 位置, 加哪行代码能让代码可编译
有以下代码:package com;public class Test {public static void main(String[] args) {Test test = new Test();//here}}在here处加上以下什么语句,可以获得Class对象?(多选)
读代码:public class Test {public static void main (String [] args) {String foo = “blue”;String bar = foo;foo = “green”;System.out.println(bar);}}结果是:
分析如下所示的Java代码,则选项中的说法正确的是( )。 class Parent{ public String name; public Parent(String pName){ this.name = pName; } } public class Test extends Parent { //1 public Test(String Name){ //2 name=\hello
【其它】程序分析: 阅读下面的程序,分析代码是否能够编译通过,如果能编译通过,请列出运行的结果。否则请说明编译失败的原因。 public class Test { public static void main(String args[]) { int n = 9; while (n > 6) { System.out.println(n); n--; } } }
代码三: public class Test03 { public static void main(); } }
以下代码可以编译通过 public class Test01 { public static void main(); } }
给定如下代码,下面可以作为该类的构造函数的是()public class Test {}
给出下面代码:public class test{static int a[] = new a[10];public static void main(){System.out.println();}}下列选项正确的是()
已知有如下代码: import java.util.*; public class Test{ public static void main(); } }
3、阅读下面代码,写出输出结果: public class A { public void fun1(int n) { Console.WriteLine("{0}x2={1}", n, 2 * n); } public void fun2(int n) { Console.WriteLine("{0}x3={1}", n, 3 * n); } } public delegate void mydelegate(int n) public class Test { public static event mydelegate p; static void Main() { A a = new A(); p += new mydelegate(a.fun1); p(1); } }
下列代码中哪一行会出现编译错误 public class Test{ int m, n; public Test(){} public Test(int a){m=a;} public static void main(String arg[]){ Test t1, t2; int j, k; j=0; k=0; t1=new Test(); t2=new Test(j,k); } }
下列代码中,将引起一个编译错误的行是 1) public class Test 2) int m,n; 3) public Test() 4) public Test(int
下列JApplet实现了一个不可编辑的JTextArea和一个JButton。请填写正确的程序代码。 import javax.swing.*; import java.awt.*; public class Test17 extends JApplet JTextArea jta; public void init() Container cp = getContentPane(); cp.se