java经典例题2.doc

public class hRli public static void main (String args) hRli r1=new hRli(5.4,5.8); System.out.println(r1+puterArea();class hRli double width; double height; hRli(double W,double H) width=W;height=H; public double computerArea() return height*width; 1020public class ert int r ; public void calc(int i, int j) int k = 0; int temp = 0; int itemp = i; for(;itemp=j;temp+) itemp+; r = new inttemp; temp = 0; for(;i=j;i+,k+) rk = i * i; temp+; /test for(k=0;k 0;temp-) result = result * temp; return result; public static void main(String args) ret f1 = new Factorial(); System.out.println(5: + f1.f(5); System.out.println(17: + f1.f(17); 2.Java Application 1010import java.io.*; import java.lang.*; import java.util.StringTokenizer; class ret public static void main(String args) StringTokenizer st=new StringTokenizer(10 20 30 40); String s=; int b=new int10; int Max=0,Min=0; int count=0; System.out.println(10: 1 10 31 45 57 6 70 18 29 50); try BufferedReader in=new BufferedReader(new InputStreamReader(System.in); s=in.readLine(); st=new StringTokenizer(s); catch(Exception e) System.out.print(e.getMessage(); while(st.hasMoreTokens() bcount=Integer.parseInt(st.nextToken(); count+; Min=b0; for(int i=0;ib.length;i+) if(Maxbi) Min=bi; System.out.println(Max:+Max); System.out.println(Min:+Min); 3.public class Exam3_4 public static void main(String args) String s,s1=;char c;s= wELCOME;for (int i=0;i=a & c=z) s1=s1+Character.toUpperCase(c); else s1=s1+Character.toLowerCase(c); System.out.println(s1); wELCOMEpublic class Exam3_5public static void main(String args )int i , j ;int a = 2,1,4,8,9,5,3;for ( i = 0 ; i a.length-1; i + ) int k = i;for ( j = i ; j a.length ; j+ )if ( ajak ) k = j;int temp =ai;ai = ak;ak = temp;for ( i =0 ; i=0;i-) System.out.print( +ai); 1:s1.startsWith(220302) 2:pareTo(s3)0 3:path.lastIndexOf(); 4:path.substring(path.indexOf(A); 5:s4.toCharArray(); 4class A public static void main(String args) String s,s1=;char c;s=args0;for (int i=0;i=a & c=z)s1=s1+Character.toUpperCase(c); else s1=s1+Character.toLowerCase(c);System.out.println(s1); dosjava A hELLO_JAVA a Hello_5.import java.util.*;public class StringSorting7_9public static void main(String args)String s = args0;s = s.toLowerCase();Arrays a=new Arrays();a.sort(s);System.out.println(+s); a z6. import javax.swing.JOptionPane;class paixu public static void main(String args) String s=; s=JOptionPane.showInputDialog(); char tmpCharArray = s.toCharArray(); for(int i=0; itmpCharArray.length; i+) System.out.print(tmpCharArrayi+ ); System.out.println(); afterSort(tmpCharArray); for(int j=0;jtmpCharArray.length;j+) System.out.print(tmpCharArrayj+ ); static public void afterSort(char array1) for (int pass=1;passarray1.length;pass+) for (int element=0;elementarray1element+1) char hold = array1element; array1element=array1element+1; array1element+1=hold; abfd abdf7 public class EqualOrNot public static void main(String args) B b1=new B(5); B b2=new B(5); System.out.println(b1=b2);System.out.println(b1.equals(b2);class B int x;B( int y) x=y; false false8class First First() System.out.println (in First); public class Second extends First Second() System.out.println(in Second); public static void main(String args) Second mine=