You can compare two strings using == operator. But, it compares references of the given variables, not values.ExampleLive Demopublic class Sample {    public static void main(String args[]){       String str1 = "hello";       String str2 = "hello";       System.out.println(str1 == str2);    } }Outputtrue

The append(char c) method of the java.lang.StringBuffer appends the string representation of the char argument to this sequence. The argument is appended to the contents of this sequence. The length of this sequence increases by 1.Example Live Demoimport java.lang.*; public class StringBufferDemo {    public static void main(String[] args) {       StringBuffer buff = new StringBuffer("tuts ");       System.out.println("buffer = " + buff);             // appends the char argument as string to the string buffer.       buff.append('A');             // print the string buffer after appending ... Read More

The equals() method of the String class compares this string to the specified object. The result is true if and only if the argument is not null and is a String object that represents the same sequence of characters as this object.Example Live Demopublic class Test {    public static void main(String args[]) {       Integer x = 5;       Integer y = 10;       Integer z =5;       Short a = 5;       System.out.println(x.equals(y));       System.out.println(x.equals(z));       System.out.println(x.equals(a));    } }Outputfalse true false

You can compare Strings using compareTo() method or, equals() method or, or == operator. Following example demonstrates how to initialize and compare strings in Java. Example Live Demo public class StringDemo { public static void main(String[] args) { String str1 = "tutorials"; String str2 = "point"; // comparing str1 and str2 int retval = str1.compareTo(str2); // prints the return value of the comparison if (retval < 0) { System.out.println("str1 is greater than str2"); } else if (retval == 0) { System.out.println("str1 is equal to str2"); } else { System.out.println("str1 is less than str2"); } } } Output str1 is less than str2

The append() method in the StringBuffer class adds the specified String to the contents of the current String buffer. Using this method you can append a single character to a string or char array in java.Examplepublic class Test {    public static void main(String args[]) {       StringBuffer sb = new StringBuffer("Hi hello how are yo");       sb.append("u");       System.out.println(sb);    } }OutputHi hello how are you

Java memory pool is divided into 5 parts namely −Method area − The method area stores the class code − code of the variables and methods.Heap−The Java objects are created in this area.Java Stack− While running methods the results are stored in the stack memory.PC registers− These contain the address of the instructions of the methods.Native method stacks− Similar to Java stack, native methods are executed on the Native method stacks.

Java Virtual Machine is a program/software which takes Java bytecode (.class files)and converts the byte code (line by line) into machine understandable code.JVM contains a module known as a class loader. A class loader in JVM loads, links and, initializes a program. It−Loads the class into the memory. Verifies the byte code instructions.Allocates memory for the program.The memory in the JVM is divided into five different parts namely− Method area− The method area stores the class code − code of the variables and methods. Heap − The Java objects are created in this area. Java Stack− While running methods the results are stored in ... Read More

Following is an example which compares Strings and portion of strings in Java? Explain with an example.ExampleLive Demopublic class StringDemo {    public static void main(String[] args) {       String str1 = "tutorials point";       String str2 = str1.substring(10);       int result = str1.compareTo(str2);       // prints the return value of the comparison       if (result < 0) {          System.out.println("str1 is greater than str2");       } else if (result == 0) {          System.out.println("str1 is equal to str2");       } else {          System.out.println("str1 is less than str2");       }    } }Outputstr1 is less than str2

The equals() method compares this string to the specified object. The result is true if and only if the argument is not null and is a String object that represents the same sequence of characters as this object.Example Live Demopublic class Sample {    public static void main(String []args) {       String s1 = "tutorialspoint";       String s2 = "tutorialspoint";       String s3 = new String ("Tutorials Point");       System.out.println(s1.equals(s2));       System.out.println(s2.equals(s3));    } }Outputtrue falseYou can also compare two strings using == operator. But, it compares references of the given ... Read More

You can compare two Strings in Java using the compareTo() method, equals() method or == operator.The compareTo() method compares two strings. The comparison is based on the Unicode value of each character in the strings. The character sequence represented by this String object is compared lexicographically to the character sequence represented by the argument string. The result is a negative integer if this String object lexicographically precedes the argument string.The result is a positive integer if this String object lexicographically follows the argument string. The result is zero if the strings are equal, compareTo returns 0 exactly when the equals(Object) method would ... Read More