标签：字符串几个常见操作方法
===============代码==================
package com.cratd;
import java.util.Random;
public class mymain {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
int a;
int[] b = new int[5];
int[] x = new int[3];
int[] [] y= new int[3] [5];
for(int i=0;i<3;i++){
for(int j=0;j<5;j++){
y[i][j]=j+i;
}
}
for(int i=0;i<3;i++){
for(int j=0;j<5;j++){
System.out.print(y[i][j]+" ");
}
System.out.print("\n");
}
System.out.print("\n");
System.out.print("\n");
System.out.print("\n");
for(int i=0;i<5;i++){
for(int j=0;j<3;j++){
System.out.print(y[j][i]+" ");
}
System.out.print("\n");
}
int p=0;
char ch=‘b‘;
String s1="celloword";
String s2="word";
//equalsIgnoreCase
System.out.print(s1.equalsIgnoreCase(s2));
System.out.print("\n");
//compareTo
System.out.print(s1.compareTo(s2));
System.out.print("\n");
//startWith
System.out.print(s1.startsWith(s2));
System.out.print("\n");
//endWith
System.out.print(s1.endsWith(s2));
System.out.print("\n");
//indexOf
System.out.print(s1.indexOf("w"));
System.out.print("\n");
//charAt
System.out.print(s1.charAt(5));
System.out.print("\n");
//substring
System.out.print(s1.substring(5));
System.out.print("\n");
System.out.print(s1.substring(3,6));
System.out.print("\n");
//concat
System.out.print(s1.concat(s1));
System.out.print("\n");
//replace
System.out.print(s1.replace("word", "?"));
System.out.print("\n");
//trim
String s3=" word ";
System.out.print("^"+s3+"^");
System.out.print("\n");
System.out.print(s3.trim());
System.out.print("\n");
//toUpperCase toLowerCase
String s4= "CrATd";
System.out.print(s4.toUpperCase());
System.out.print("\n");
System.out.print(s4.toLowerCase());
System.out.print("\n");
}
}
==============输出===================
0 1 2 3 4
1 2 3 4 5
2 3 4 5 6
0 1 2
1 2 3
2 3 4
3 4 5
4 5 6
false
-20
false
true
5
w
word
low
cellowordcelloword
cello?
^ word ^
word
CRATD
cratd
本文出自 “大道至简，天地尽在我心中” 博客，请务必保留此出处http://8392460.blog.51cto.com/8382460/1771574
标签：字符串几个常见操作方法
原文地址：http://8392460.blog.51cto.com/8382460/1771574
