Problem related to switch case and Scanner

See more:

Java

I am selecting a method using switch case and in method asking for input in two different statement but both stm printing together.And if i am using same thing with 'if else' in place of switch it is proper working.Can any one tell what is the problem.

public void startmethod() throws Exception {
        System.out.println("1. for copy and paste");

choice = kb.nextInt();
        switch (choice) {
        case 1:
            copyandpaste.selectOption();
            break;

public void selectOption() throws Exception {
        System.out.println("1. Text file");

switch (choice) {
        case 1: {
            this.copyAndPasteTxt();
            break;

public void copyAndPasteTxt() throws Exception {
        System.out.println("enter source loc");
        src = kb.nextLine();

File file=new File(src);
if((file.exists())==true){

then it prints the print statement and without waiting for input it prints the else statement.