JMD-003 
### String的常见面试题
```java
public class StringTest {
    @Test
    public void test1() {
        String s1 = "abc";
        String s2 = "abc";
        System.out.println(s1 == s2);    //true
        String s1 = new String("abc");
        String s2 = new String("abc");
        System.out.println(s1 == s2);    //false
        String s = "java";
        String t = "java";
        System.out.println(s == t);    //true
        String s1 = "1";
        String s2 = "1";
        System.out(s1 == s2);    //true
        String s1 = "1";
        String s2 = "1";
        System.println(s1 == s2);    //true
        String s1 = "1";
        String s2 = "1";
        System.println(s1 == s2);    //true
    }
}
```
### String的常见问题
```java
public class StringTest {
    @Test
    public void test2() {
        String s1 = "1";
        String s2 = "1";
        System.println(s1 == s2);    //true
        String s1 = "1";
        String s2 = "1";
        System.println(s1 == s2);    //true
        String s1 = "1";
        String s2 = "1";
        System.println(s1 == s2);    //true
        String s1 = "1";
        String s2 = "1";
        System.println(s1 == s2);    //true
        String s1 = "1";
        String s2 = "1";
        System.println(s1 == s2);    //true
        String s1 = "1";
        String s2 = "1";
        System.println(s1 == s2);    //true
        String s1 = "1";
        String s2 = "1";
        System.println(s1 == s2;    //true
        String s1 = "1";
        String s2 = "1";
        System.println(s1 == s2;    //true
        String s1 = "1";
        String s2 = "1";
        System.println(s1 == s2;    //true
        String s1 = "1";
        String s2 = "1";
        System.println(s1 == s2;    //true
        String s1 = "1";
        String s2 = "1";
        System.println(s1 == s2;    //true
    }
}
```
<tests/test1.java> <tests/test2.java> <tests/test3.java> <tests/test4.java> <tests/test5.java> <tests/test6.java> <tests/test7.java> <tests/test8.java> <tests/test9.java> <tests/test10.java> <tests/test11.java> <tests/test12.java> <tests/test13.java> <tests/test14.java> <tests/test15.java> <tests/test16.java> <tests/test17.java> <tests/test18.java> <tests/test19.java> <tests/test20.java> <tests/test21.java> <tests/test22.java> <tests/test23.java> <tests/test23.java> <tests/test24.java> <tests/test25.java> <tests/test26.java> <tests/test27.java> <tests/test28.java> <tests/test29.java> <tests/test30.java> <tests/test31.java> <tests/test32.java> <tests/test33.java> <tests/test34.java> <tests/test35.java> <tests/test36.java> <tests/test37.java> <tests/test38.java> <tests/test39.java> <tests/test40.java> <tests/test41.java> <tests/test42.java> <tests/test43.java> <tests/test44.java> <tests/test45.java> <tests/test46.java)}}}}}}
2018年4月14日