package String;

import org.junit.Test;

public class StringTest {

@Test

public void test3(){

String s1 = "Java";

String s2 = "hadoop";

String s3 = "Javahadoop";

String s4 = "Java" + "hadoop";

String s5 = s1 + "hadoop";

String s6 = s1 + s2;

System.out.println(s3 == s4);//true

System.out.println(s3 == s5);//false

System.out.println(s3 == s6);//false

String s7 = s4.intern();

System.out.println(s3 == s7);//true

}

@Test

public void test2(){

String s1 = "JAVAEE";

String s2 = "JAVAEE";

String s3 = new String("JAVAEE");

String s4 = new String("JAVAEE");

System.out.println(s1 == s2);//true

System.out.println(s1 == s3);//false

System.out.println(s3 == s4);//false

}

@Test

public void test1(){

String s1 = "abc";

String s2 = "abc";

System.out.println(s1 == s2);

}

}