String的构造方法和一般方法

public class StringTest{    public static void main(String[] args){        //1        String s1 = "abc";        //2        String s2 = new String("cdg");        //3        byte[] bytes={98,88,34,25};        String s3 = new String(bytes);        //4String(byte[] bytes, int offset, int length)Constructs a new String by decoding the specified subarray of bytes using the platform's default charse；        String s4 = new String(bytes,1,3);        //5.        char[] c1 = {'我','是','中','国','人'};        String s5 = new String(c1);        System.out.println(s5); //我是中国人                        //6.        String s6 = new String(c1,2,2);        System.out.println(s6); //中国System.out.println(s3); //abcd  String已经重写了Object中的toString    }}/*字符串常用方法*/public class StringTest06{                public static void main(String[] args){                                //1.char charAt(int index);                String s1 = "我是王勇，是坏人！";                char c1 = s1.charAt(2);                System.out.println(c1); //王                                //2.boolean endsWith(String endStr);                System.out.println("HelloWorld.java".endsWith("java")); //true                System.out.println("HelloWorld.java".endsWith(".java")); //true                System.out.println("HelloWorld.java".endsWith("HelloWorld.java")); //true                                System.out.println("HelloWorld.java".endsWith("txt")); //false                System.out.println("HelloWorld.java".endsWith("java ")); //false                                //3. boolean equalsIgnoreCase(String anotherString);                System.out.println("abc".equalsIgnoreCase("ABc")); //true                                //4.byte[] getBytes();                byte[] bytes = "abc".getBytes();                                for(int i=0;i