String handling Java vs. C

5. String

Public class World {

Public Static void Main (string[] args) {

TODO Auto-generated method stubs

String name = "Tom";

String sex = "Felmale";

String from = "USA";

String info1= "Name:" +name+ "Sex:" +sex+ "from:" +from;

String Info2= "Name:" +name+ "\ n" + "Sex:" +sex+ "\ n" + "from:" +from;

System. out. println ("Info1");

System. out. println ("Info2");

}

This program outputs Info1,info2;

Public class World {

Public Static void Main (string[] args) {

TODO Auto-generated method stubs

String name = "Tom";

String sex = "Felmale";

String from = "USA";

String info1= "Name:" +name+ "Sex:" +sex+ "from:" +from;

String info2= "Name:" +name+ "\ n" + "Sex:" +sex+ "\ n" + "from:" +from;

System. out. println (INFO1);

System. out. println (Info2);

}

This program outputs:

Name:tom Sex:felmale From:usa

Name:tom

Sex:felmale

From:usa

(One line here)

If quoted, print at the string constant "info1" instead of treating it as a variable, without quoting the INFO1 assignment. The final print result has a blank line because println () prints a string followed by a newline step.

String greeting= "Hello china!"

String s=greeting.substring (0,5) This is intercept, get substring "Hello"

The first position of the string is 0, the position of the nth character is n-1;substring (int beginindex,int endindex), and the substring ends from Beginindex to Endindex-1. Substring (0,5) is actually a No. 0 character to a fourth character.

Public class World {

Public Static void Main (string[] args) {

TODO Auto-generated method stubs

String a= "Hello";

String b= "Hello";

String c=New string ("Hello");

String d=New string ("Hello");

System. out. println (a==b);

System. out. println (B==C);

System. out. println (C==d);

System. out. println (a.equals (b));

System. out. println (B.equals (c));

System. out. println (C.equals (d));

}

}

Results:

True

False

False

True

True

True

Determine two strings equal, which is the method to use equals: s1.equals (S2)

Be careful not to use "= =" to test whether two strings are equal, he is to determine whether two strings are stored in the same location.

Public class World {

Public Static void Main (string[] args) {

TODO Auto-generated method stubs

String a= "Hello china!";

String b=a.substring (0,6);

String c=b+ "World";

System. out. println (c);

}

}

Turn hello China into Hello World

The C language connects 2 strings:

#include <stdio.h>

#include <string.h>

Main ()

{

Char a[20]= "1234";

Char b[20]= "ABCD";

Strcat (A, b);

printf ("%s\n", a);

}

In Java:

Public class World {

Public Static void Main (string[] args) {

TODO Auto-generated method stubs

String a= "Hello";

String b= "World";

String C=a.concat (b);

System. out. println (c);

}

Or:

Public class World {

Public Static void Main (string[] args) {

TODO Auto-generated method stubs

String c= "he". Concat ("Llo"). Concat ("China");

System. out. println (c);

}

Int CompareTo (String other): Compares 2 strings in a dictionary order.

Boolean equalaignorecase (String otherstring): Compares this string to another string.

String handling Java vs. C