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題目:
1、查詢(xún)身份證號(hào)碼為440401430103082的申請(qǐng)日期
Select applay. g_applydate
From g_cardapply applay, g_cardapplydetail detail
Where applay. g_applyno=detail. g_applyno
And detail. g_idcard=’ 440401430103082’
2、將身份證號(hào)碼為440401430103082的記錄在兩個(gè)表中的申請(qǐng)狀態(tài)均改為07
Update g_cardapply apply, g_cardapplydetail detail set applay.g_state=’07’, detail.g_state=’07’ Where applay. g_applyno=detail. g_applyno
And detail. g_idcard=’ 440401430103082’
3、刪除g_cardapplydetail表中所有姓李的記錄
Delete from g_cardapplydetail where g_name like ‘李%’
Java API運(yùn)用
3、請(qǐng)寫(xiě)出你所知道的Java API中所提供的數(shù)據(jù)結(jié)構(gòu)模型(例如Vector),并指出各數(shù)據(jù)模型在存儲(chǔ)結(jié)構(gòu)上和使用上有什么不同。(7分)
4、指出JDBC中三種不同類(lèi)型的Statement(Statement、PreparedStatement、CallableStatement)的用途分別是什么。(7分)
(三) 讀程序?qū)懡Y(jié)果(10分)
寫(xiě)出下面程序的運(yùn)行結(jié)果,下面程序有些可能根本無(wú)法通過(guò)編譯,如果無(wú)法編譯通過(guò),請(qǐng)指出錯(cuò)誤原因。
1、寫(xiě)出下面程序的運(yùn)行結(jié)果:(3分)
public class Test {
public static void changeStr(String str){
str="welcome";
}
public static void main(String[] args) {
String str="1234";
changeStr(str);
System.out.println(str);
}
}
2、寫(xiě)出下面程序的運(yùn)行結(jié)果(5分)
class Foo{
public static void main(String args[]){
int x=4,j=0;
switch(x){
case 1:j++;
case 2:j++;
case 3:j++;
case 4:j++;
case 5:j++;
default:j++;
}
System.out.println(j);
}
}
(四) 代碼查錯(cuò)(10分)
1、指出下面程序的運(yùn)行錯(cuò)誤(4分)
public class OutClass{
private int varInOuterClass = 0;
public OutClass(){
}
public void callOutter(){
int varInOuterMethod = 0;
class InnerClass{
private int varInInnerClass = 0;
public InnerClass(){
}
public void print(){
System.out.println("varInOuterClass" + varInOuterClass);
System.out.println("varInInnerClass" + varInInnerClass);
System.out.println("varInInnerClass" + varInOuterMethod);
}
}
InnerClass inner = new InnerClass();
inner.print();
}
public static void main(String[] args){
OutClass out = new OutClass();
out.callOutter();
}
}
2、指出下面程序的運(yùn)行錯(cuò)誤(3分)
public class Something {
public static void main(String[] args) {
Something s = new Something();
System.out.println("s.doSomething() returns " + doSomething());
}
public String doSomething() {
return "Do something ...";
}
}
(五) 編程題(10分)
算法設(shè)計(jì)能力測(cè)試(10分)
1、編寫(xiě)一個(gè)類(lèi),該類(lèi)封裝了一元二次方程共有的屬性和功能,即該類(lèi)有刻畫(huà)方程系數(shù)的3個(gè)成員變量以及計(jì)算實(shí)根的方法。
方程:求根方法為 要求:該類(lèi)的所有對(duì)象共享常數(shù)項(xiàng)。
下面給出了您在程序中可能會(huì)使用到的功能類(lèi),及其部分接口的API文檔,在程序中可以進(jìn)行使用,
java.lang.Math | |
staticfloat | signum(floatf) Returns the signum function of the argument; zero if the argument is zero, 1.0f if the argument is greater than zero, -1.0f if the argument is less than zero. |
staticdouble | sin(doublea) Returns the trigonometric sine of an angle. |
staticdouble | sinh(doublex) Returns the hyperbolic sine of adoublevalue. |
staticdouble | sqrt(doublea) Returns the correctly rounded positive square root of adoublevalue. |
staticdouble | tan(doublea) Returns the trigonometric tangent of an angle. |
staticdouble | tanh(doublex) Returns the hyperbolic tangent of adoublevalue. |
staticdouble | toDegrees(doubleangrad) Converts an angle measured in radians to an approximately equivalent angle measured in degrees. |
staticdouble | toRadians(doubleangdeg) Converts an angle measured in degrees to an approximately equivalent angle measured in radians. |
(一)不定項(xiàng)選擇
1, C 2, A D 3, A D 4, B 5, E 6, A C D 7, A E 8, A B 9, A B C D
10, A B C 11, C 12, C D 13, C 14, C 15, C 16, B 17, D, 18, A B D
19, D, 20, C D 21,B C 22, B C 23, A C E 24, A C D
(五)編程題
public class Equation {
public float a;
public float b;
public float c;
public double[] d;
public Equation(float a, float b, float c) {
this.a = a;
this.b = b;
this.c = c;
this.d = new double;
}
boolean getRealRoot() {
float temp = b b - 4 a c;
if (temp < 0)
return false;
else {
this.d[0] = (-b + Math.sqrt(temp)) / (2 a);
this.d = (-b - Math.sqrt(temp)) / (2 a);
return true;
}
}
public static void main(String[] arg) {
Equation e1 = new Equation(1, 2, 1);
if (e1.getRealRoot()) {
System.out.print(e1.d[0]);
System.out.print(";");
System.out.println(e1.d);
} else {
System.out.print("no real root");
}
}
}
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