int x=2,y=-1,z=2;

if(x if(y<0) z=0;

else z+=1;

System.out.println(z);)

int a=100,x=10,y=20,ok1=5,ok2=0;

if(x if(y!=10)

if(ok1!=5)

a=1;

else

if(ok2!=0) a=10;

a=-1;

System.out.println(a);)

Public class E {

public static void main(String[] args) {

int i, j, x = 0;

for (i = 0; i < 3; i++) {

x++;

for (j = 0; j < 3; j++) {

if (j % 2 == 0) continue;

x++; }

}

System.out.println("x="+x);

}

}

Public class E {

Public static void main (String args[ ]) {

Int

A,b;

for(a=1,b=1;a<=100;a++){

if(b>=20) break;

if(b%3==1){

b+=3;

continue;

}

b-=5;

}

System.out.println(a+","+b);

}

}

Public class E {

Public static void main (String args[ ]) {

Int i;

for(i=1;i<=5;i++){

if(i%2==1)

System.out.print(”*”) ; else continue;

System.out.print(”#”) ;

}

System.out.println(”$”);

}

}

）。

Public class LianXi{

public static void main(String args[] )

{ char a[]={‘A’,’B’,’C’,’D’,E’};

for(int i=0;i<=a.length/2;i++)

{ char c=a[i];

a[i]=a[a.length-(i+1)];

a[a.length-(i+1)]=c;

}

for(int i=0;i System.out.print(a[i]);

};i++)

Class B {

int x = 100,y = 200;

public void setX(int x) {

x = x;

}

public void setY(int y) {

this.y = y;

}

public int getXYSum() {

return x+y;

}

}

Public class E {

public static void main(String args[]) {

B b = new B();

Public class T3{

Public static void main (String args[ ]) {

int i, j, m;

int a[][] = {{1,20},{32,14},{5,62},{87,38},{9,10}};

m = a[0][0];

for (i=0; i<2; i++)

for (j=0; j<5; j++)

if( m>a[i][j] ) m = a[i][j];

System.out.println("m="+m);

}

}

Class Circle（

＿＿double PI= 3.14;

Int radius;

＿＿int num;

Public Circle (int radius) l

＿＿.radius= radius;

Num++; } double area () ｛

Return PI * PI * radius；

＿＿ Class Vehicle｛

abstract void go) ;｝

Class Car ＿＿ yehiclet｛

Public void go () ｛

System.out.println（"小汽车启动"）；｝｝

Public class Main｛

Public static void main (String[l args) ｛

Car c= new Car () ;

90 ( ) ;｝｝

＿＿userDAO｛

Boolean insert （User user）；

Class UserDAOImp1＿＿UserDA O｛

Public boolean insert (User user) (

If (.) ( return true; )

Else l return false;｝｝｝

Interface Shape｛

Double PI= 3.14;

Abstract double area () ;｝

Public class Circle implements Shape｛

Double radius;

Public Circle (double r) ｛

Radius=r;｝

Public double area () ｛

Return PI * radius * radius;｝

Public static void main (String args l) ｛

Circle c= new Circle (5. 0) ;

System.out. println (c.area ()) ;｝｝