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我的評論
re: 字符串1 沉默奔跑者 2008-03-11 09:22
import javax.swing.*;
  public class StringTest2  {
  public static void main(String args[]){
 String s1,s2,s3,s4,output;
s1=new String ("good morning");
s2=new String ("John");
s3=new String("How are you");
s4=new String(" how are you");
output="s1="+s1+"\ns2="+s2+"\ns3="+s3+"\ns4"+s4+"\n\n";
if(s1.equals("hello"))
output+="s1 equals\"hello\"\n";
else
output+="s1 dose not equal\"hello\"\n";
if (s3.equalsIgnoreCase(s4))
output+="s3 equals s4\n";
else
output+="s3 dose not equal s4\n";
if(s3.regionMatches(0,s4,0,5))
output+="First 5 characters of s3 and s4 match\n";
else
output+="First 5 characters of s3 and s4 do not match\n";
if(s3.regionMatches(true,0,s4,0,5))
output+="First 5 characters of s3 and s4 match\n";
else
output+="First 5 characters of s3 and s4 do not match\n";
output+="s1與s4連接起來是："+s1.concat(s4)+"\n";
output+="the first\"day\"of s4 is :"+s4.indexOf("you")+"\n";
output+="the last\"day\"of s4 is :"+s4.lastIndexOf("we");
JOptionPane.showMessageDialog(null,output,"Demonstring String Class CONstructors",JOptionPane.INFORMATION_MESSAGE);
System.exit(0);
 }
 }
//p133
re: 字符串1 沉默奔跑者 2008-03-11 09:20
public class StringTest1 {
public static void main(String args[]){
char c1[]={'t','o','m','i','s','a','b','o','y'};
String s1="good morning";
String s2=new String();
String s3=new String(c1);
String s4=new String(c1,6,3);
System.out.println("s1 is :"+s1);
System.out.println("s2 is:"+s2);
System.out.println("s3 is:"+s3);
System.out.println("s4 is:"+s4);
}
}
re: 字符串1 沉默奔跑者 2008-03-11 09:19
class ExampleStringBuffer {
public static void main(String[] buf){
StringBuffer sb=new StringBuffer("test");
System.out.println("buffer="+sb);
System.out.println("length="+sb.length());
System.out.println("capacity="+sb.capacity());
}
}
re: 字符串1 沉默奔跑者 2008-03-11 09:15
class Const {
public static void main(String[] args){
char chars1[]={'t','e','s','t'};
char chars2[]={'t','e','s','t','1'};
String s1=new String(chars1);
String s2=new String(chars2);
System.out.println("Value of String s1 is :"+s1);
System.out.println("Value of String s2 is:"+s2);
System.out.println("他們都是字符串\"test\"!");
}
}
re: 字符串1 沉默奔跑者 2008-03-11 09:14
import javax.swing.*;
public class InputTest {
public static void main(String args[]){
String name=JOptionPane.showInputDialog("What is your name?");
String input=JOptionPane.showInputDialog("How old are you?");
int age=Integer.parseInt(input);
System.out.println("Hello,"+name+".Next year,you'll be"+(age+1));
System.exit(0);
}
}
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